Denning is an isolated town in Ulster County, New York, United States. The population was 493 at the 2020 census. The town is named after an early landowner, William Denning. Denning is located in the western part of the county, deep inside the Catskill Mountains. The location of the town in the Catskill State Park accounts in part for its low population.
Table and Peekamoose mountains, the southernmost of the Catskill High Peaks, dominate the view in the town's higher ground.
Town hall
The Catskill Mountains, also known as the Catskills, are a physiographic province and subrange of the larger Appalachian Mountains, located in southeastern New York. As a cultural and geographic region, the Catskills are generally defined as those areas close to or within the borders of the Catskill Park, a 700,000-acre (2,800 km2) forest preserve protected from many forms of development under New York state law.
Slide Mountain and nearby peaks as seen from Twin Mountain in the northern Catskills
Views of the Catskills from the Hudson like this led to the name "Blue Mountains" for a time.
Free-floating tubers on Esopus Creek
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).
