Catskill Mountains

Views of the Catskills from the Hudson like this led to the name "Blue Mountains" for a time.

A 1685 revision of a 1656 map of New Netherland showing the locations of the "Lands of the Kats Kills" and the "High Lands of the Esopus"

Nicolaes Visscher I's 1656 map of New Netherland located the Landt van Kats Kill at the mouth of Catskill Creek. The region to the south is identified as Hooge Landt van Esopus (High Lands of the Esopus), a reference to a local band of northern Lenape Native Americans who inhabited the banks of the Hudson and hunted in the highlands along the Esopus Creek.[3]

While the meaning of the name ("cat creek [kill]" in Dutch) and the namer (early Dutch explorers) are settled matters, how and why the area is named "Catskills" is a mystery. Mountain lions (catamounts) were known to have been in the area when the Dutch arrived in the 17th century and may have been a reason for the name.[4]

The confusion over the origins of the name led over the years to variant spellings such as Kaatskill and Kaaterskill, both of which are also still used: the former in the regional magazine Kaatskill Life, the latter as the name of a mountain peak and a waterfall. The supposed Native American name for the range, Onteora ("land in the sky"), was actually created by a white man in the mid-19th century to drum up business for a resort. It, too, persists today as the name of a school district and as the name of a Boy Scout summer camp (Onteora Scout Reservation).

The Catskill Mountains are approximately 100 miles (160 km) north-northwest of New York City and 40 miles (64 km) southwest of Albany, starting west of the Hudson River. The Catskills occupy much of two counties (Greene and Ulster), and extend slightly into Delaware, Sullivan, and southwestern Schoharie counties.

At the range's eastern end, the mountains begin dramatically with the Catskill Escarpment rising up suddenly from the Hudson Valley. The western boundary is far less certain, as the mountains gradually decline in height and grade into the rest of the Allegheny Plateau, but maps from the 18th and 19th centuries consistently mark the border of the Catskill Mountains as the East Branch of the Delaware River, which is consistent with the actual topographic relief.[5] The Pocono Mountains, to the immediate southwest in Pennsylvania, are also a part of the Allegheny Plateau.

The Catskills contain more than 30 peaks above 3,500 feet (1,100 m) and parts of six important rivers. The Catskill Mountain 3500 Club is an organization whose members have climbed all the peaks in the Catskills over 3,500 feet (1,100 m). The highest mountain, Slide Mountain in Ulster County, has an elevation of 4,180 feet (1,270 m).

Free-floating tubers on Esopus Creek

Climatically, the Catskills lie within the Allegheny Highlands forests ecoregion.

According to the Köppen climate classification system, the Catskill Mountains have two climate zones. The vast majority of the Catskills have a warm summer humid continental climate (Dfb) with some isolated locations in valleys with hot summer humid continental climate (Dfa). The plant hardiness zone on Slide Mountain at 4,180 feet (1,270 m) is 5a with an average annual extreme minimum temperature of −16.6 °F (−27.0 °C). The plant hardiness zone in Margaretville at 1,000 feet (300 m) is 5b with an average annual extreme minimum temperature of −10.6 °F (−23.7 °C).[6]

Kaaterskill Falls on Spruce Creek near Palenville, New York. One of the higher falls in New York. Two separate falls total 260 ft (79 m).

Although the Catskills are sometimes compared with the Adirondack Mountains farther north, the two mountain ranges are not geologically related, as the Adirondacks are a continuation of the Canadian Shield. Similarly, the Shawangunk Ridge, which forms the southeastern edge of the Catskills, is part of the geologically distinct Ridge-and-Valley province and is a continuation of the same ridge known as Kittatinny Mountain in New Jersey and Blue Mountain in Pennsylvania.

The Catskill Mountains are more of a dissected plateau[8] than a series of mountain ranges. The sediments that make up the rocks in the Catskills were deposited when the ancient Acadian Mountains in the east were rising and subsequently eroding. The sediments traveled westward and formed a great delta into the sea that was in the area at that time. The escarpment of the Catskill Mountains is near the former (landward) edge of this delta, as the sediments deposited in the northeastern areas along the escarpment were deposited above sea level by moving rivers, and the Acadian Mountains were located roughly where the Taconic Mountains are located today (though significantly larger). Finer sediment was deposited further westward, and thus the rocks change from gravel conglomerates to sandstone and shale. Further west, these fresh water deposits intermingle with shallow marine sandstone and shale until the end, in deeper water limestone.

The uplift and erosion of the Acadian Mountains was occurring during the Devonian[9] and early Mississippian period (395 to 325 million years ago). Over that time, thousands of feet of these sediments built up, slowly moving the Devonian seashore further west. A meteor impact occurred in the shallow sea approximately 375 mya, creating a 10 km (6 mi) diameter crater. This crater eventually filled with sediments and became Panther Mountain through the process of uplift and erosion. By the middle of the Mississippian period, the uplift stopped, and the Acadian Mountains had been eroded so much that sediments no longer flowed across the Catskill Delta.

Platte Clove, a break in the Catskill Escarpment created by glacial action

Over time, the sediments were buried by more sediments from other areas, until the original Devonian and Mississippian sediments were deeply buried and slowly became solid rock. Then the entire area experienced uplift, which caused the sedimentary rocks to begin to erode. Today, those upper sedimentary rocks have been completely removed, exposing the Devonian and Mississippian rocks. Today's Catskills are a result of the continued erosion of these rocks, both by streams and, in the recent past, by glaciers.

In successive ice ages, both valley and continental glaciers have widened the valleys and the notches of the Catskills and rounded the mountains. Grooves and scratches in exposed bedrock provide evidence of the great sheets of ice that once traversed the region. Even today the erosion of the mountains continues, with the region's rivers and streams deepening and widening the mountains' valleys and cloves.

From 1872, the northern part of the Catskills were served by the Catskill Mountain Branch of the Ulster and Delaware Railroad which was absorbed into the New York Central railroad in 1932. Oneonta to Kingston passenger rail service continued until 1954. Part of the line still exists but now serves only freight.

The southern part of the Catskills was served by the New York, Ontario and Western Railway. Over the course of 1950, service on the NYO&W downscaled to summer only. In its last years it ran trains from Roscoe to Weehawken, New Jersey, via Liberty. It connected with the New York Central's West Shore Railroad at Cornwall.[17][18] This service lasted until September 10, 1953.[19]

The Delaware and Ulster Railroad is a heritage railroad, based in Arkville, New York, that still runs a scenic part of the track from Highmount to Hubbell Corners, New York, for tourist use. The Catskill Mountain Railroad is also a heritage railroad in the Catskills, operating from Kingston up to Highmount.

A map of the railroads in the Catskills. Despite what the map says, nearly the entirety of this map is of the Catskills. East of the Hudson River are The Berkshires and the Taconic Mountains, and to the far north (central and northern Albany County, and far-northern Schoharie County) are the Appalachians.

The Catskills are accessible by automobile from the east along Interstate 87/New York State Thruway, which runs north–south through the Hudson Valley. To the south and southwest, the Catskills are accessible by a variety of highways, including New York State Route 55, U.S. Route 44, U.S. Route 209, and New York State Route 17. Access to the western Catskills is provided by New York State Route 30; and the vaguely defined far-western edge of the region is variously considered to be New York State Route 10 or Interstate 88, though this boundary remains a matter of local preference. New York State Routes 28 and 23A cut east–west through the heart of the Catskills, serving many of the most popular outdoor tourist destinations. New York State Route 23 runs east–west across the Catskills' northern section.

The closest major airports to the Catskill region are Albany International Airport to the north and Stewart International Airport in Newburgh to the south. Smaller airports in the region include:

• Columbia County Airport in Hudson
• Dutchess County Airport in Poughkeepsie
• Joseph Y. Resnick Airport in Ellenville
• Kingston–Ulster Airport
• Kobelt Airport in Wallkill
• Randall Airport in Middletown
• Sullivan County International Airport in Monticello
• Wurtsboro–Sullivan County Airport

The Hudson Valley Film Commission maintains a list of films set in the Hudson Valley/Catskills Region.[20] Of them, more than three dozen films are set in the Catskills. Author/illustrator Jonathan Schork, born and raised in Olivebridge in the southern Catskills, acknowledges the area as the inspiration for two of his children's books: 2016's The Love of Simon Fox, and 2018's More Tales from the Enchanted Wood (the latter the recipient of several prizes for children's literature).[21] The town of Bethel, New York, located in the Catskills, was home to the famous Woodstock music festival that took place August 15–18, 1969. The event, wherein 32 music acts performed in front of over 500,000 concert-goers, was captured in the documentary movie Woodstock (1970). The site is now home to the world-renowned Bethel Woods Center for the Arts.

The many hotels and vacation resorts located in the Catskills are notable in American cultural history for their role in the development of modern stand-up comedy. Comedians such as Rodney Dangerfield, Jackie Mason, Alan King, and Don Rickles all got their start performing in Catskill hotel venues colloquially referred to as the Borscht Belt.[22]

• Gallery of paintings and photographs
• 
  View from The Mountain House (1836), painting by William Henry Bartlett
• 
  Paul Weber, Scene in the Catskills, 1858
• 
  October in the Catskills, 1880 painting by Sanford Robinson Gifford
• 
  The Catskills, 1859 painting by Asher Brown Durand depicting the Catskills using the "sublime landscape" approach[23]
• 
  The Redmond Stage, Woodstock music festival, 1969
• 
  Kaaterskill Falls on the Catskill Mountains (1826–27), painting by William Guy Wall, Honolulu Museum of Art

• Helderberg Escarpment
• Resorts World Catskills

• Heilprin, Angelo (1907). "The Catskill Mountains". Bulletin of the American Geographical Society. 39 (4): 193–201. doi:10.2307/198709. ISSN 0190-5929. JSTOR 198709.
• McIntosh, Robert P. (1962). "The forest cover of the Catskill Mountain region, New York, as indicated by land survey records". American Midland Naturalist. 68 (2): 409–23. doi:10.2307/2422746. ISSN 0003-0031. JSTOR 2422746.
• McIntosh, Robert P. (1972). "Forests of the Catskill Mountains, New York". Ecological Monographs. 42 (2): 143–61. doi:10.2307/1942261. JSTOR 1942261.
• McIntosh, R. P.; R. T. Hurley (1964). "The spruce-fir forests of the Catskill Mountains". Ecology. 45 (2): 314–26. doi:10.2307/1933844. ISSN 0012-9658. JSTOR 1933844.
• Rich, John Lyon (1906). "Local glaciation in the Catskill Mountains". The Journal of Geology. 14 (2): 113–21. Bibcode:1906JG.....14..113R. doi:10.1086/621285. ISSN 0022-1376. S2CID 129029014.
• Shepard, Paul (1957). "Paintings of the New England landscape: a scientist looks at their geomorphology". College Art Journal. 17 (1): 30–43. doi:10.2307/773655. ISSN 1543-6322. JSTOR 773655.
• Silverman, Stephen M.; Silver, Raphael D. (2015). The Catskills: Its History and How It Changed America. Knopf Doubleday Publishing Group. ISBN 9781101875889.
• Weathers, K. C.; G. M. Lovett; G. E. Likens; R. Lathrop (2000). "The effect of landscape features on deposition to Hunter Mountain, Catskill Mountains, New York". Ecological Applications. 10 (2): 528–40. doi:10.1890/1051-0761(2000)010[0528:TEOLFO]2.0.CO;2. ISSN 1051-0761.

Wikimedia Commons has media related to Catskill Mountains.

Wikivoyage has a travel guide for Catskills.

Wikisource has the text of the 1921 Collier's Encyclopedia article Catskill Mountains.

• "Catskill Mountains" . Encyclopædia Britannica. Vol. 5 (11th ed.). 1911.
• Hiking Guide to Catskill High Peaks—Catskill 3500 Club
• List of Catskills peaks organized by hiking difficulty
• Website for the Catskill Mountain Club hiking
• The Catskill Archive – History of the Catskill Mountains
• The Catskill Mountain Foundation
• The Catskill Center
• The Catskill Watershed Corporation
• Catskill Region Photo Gallery
• Catskill Mountainkeeper—Protecting the Six Counties of the Catskills
• Catskill Mountain Businesses listed on Hudson Valley Directory
• Sullivan County Visitors Association