Mount Tammany is perhaps New Jersey's most iconic mountain. Mount Tammany makes up the North portion of the Delaware Water Gap, which serves as a gateway to and from New Jersey via Interstate 80.
Althought it is only New Jersey's fifth highest mountain, Mount Tammany requires the largest vertical gain of any mountain in our state. From the Dunnfield Creek trailhead to the Tammany summit is a 1200' climb.
There are many views of the Water Gap from the trails on Tammany. The photograph above was taken near the summit of Tammany, with a view of the Gap and Mount Minsi.
| Elevation | 1549 |
| Decimal degrees | 40.9723, -75.1057 |
| County | Warren |
| Ownership | public |
| Owner | Delaware Water Gap National Recreation Area |
| Topo map | Acme Mapper |
| Nearest higher neighbor | Catfish Mountain |
Trip Reports
Peter De Celie on 01/21/2022
Ice all the way up this steep rocky climb to the top with beautiful views ! The Red Dot Trail is well marked. The parking area, with a porta-a-john, was empty today and I met no one on the trail nor the summit. I took about 1 hour up and with out Kahtoola crampons I never would have made it !
Peter De Celie on 01/21/2022
Ice all the way up this steep rocky climb to the top with beautiful views ! The Red Dot Trail is well marked. The parking area, with a porta-a-john, was empty today and I met no one on the trail nor the summit. I took about 1 hour up and with out Kahtoola crampons I never would have made it !
Peter De Celie on 01/21/2022
Ice all the way up this steep rocky climb to the top with beautiful views ! The Red Dot Trail is well marked. The parking area, with a porta-a-john, was empty today and I met no one on the trail nor the summit. I took about 1 hour up and with out Kahtoola crampons I never would have made it !
Kayleigh Adams on 10/23/2021
Beautiful day. Bear spotted during ascent in tree. Post summit, took trail to sunfish pond and came back on the Appalachian
Kristin on 08/07/2021
The parking near the Mt. Tammany loop was packed so my hiking partner and I parked at the Karamac parking area on Old Mine Road and took Farview and the AT to the Mt. Tammany loop doing it counter clockwise. We had the parking area to ourselves and the first part of the hike was very peaceful. The loop part was very crowded but it was still fun and the views were nice. We attempted to take the Mount Tammany fire road to the true summit but the trail was very overgrown and we were unable to leave the trail to find the summit but we got close! The parking area was full when we got back to our car and we explored some ruins on the Karamac trail before driving further up Old Mine road passing an old school house and many more ruins. I will definitely have to come back to do some more exploring and more peaks in the area!
Pictures from Mount Tammany
An Eastward view from Tammany. —Eric Koppel
Looking into the gap. —Eric Koppel
Victorious celebration at the summit! —Eric Koppel
First light near summit of Mount Tammany. —SoloJoe
Waterfall along Blue Dot trail. —SoloJoe
Classic shot of the Delaware Water Gap from near the summit of Mount Tammany. —SoloJoe
