The Catskill 3500 Club identifies 35 peaks in the Catskills that reach above 3,500 feet (1,066.8 kilometers), and it also qualifies its criteria about distance from other peaks. The most prominent is also the highest: Slide Mountain reaches 4,180 feet (1,274 meters). As you might expect, it's also one of the most difficult climbs in the Catskills. The name comes from a 19th-century landslide.
The other peak above 4,000 feet is Hunter Mountain, which reaches 4,040 feet (1,231.4 meters). You can access it from Devil's Path or Becker Hollow Trail. It's also the site of a fire tower, the original of which was built in 1909. Although it no longer stands, you can still see its footing. The one that stands today was built in 1953 and restored in 2000. The next two highest peaks are Black Dome and Thomas Cole (named after the famed painter of the Hudson River School).