Gunks forest on Catskill geology
I agree w/ Freddy that AHP is a real nice peak. The trail follows a nice brook at the start, it's a pretty easy walk for the first 2/3rds and then gets a bit steeper, there are nice views from a couple different spots, and once on top you have several options. You can head back down the way you came, do the loop, or 'whack/herd path out to the little subpeak for more views.
Forestwise, AHP is more like the Shawangunks and southern Catskill foothills than the rest of the Catskills. Lots of oak, laurel and the best blueberry patches in the Catskills. I believe all due to an old burn. All this is a mixed blessing to me. I like the novelty of if compared to it's higher and more northern and western neighbors, I like the transitional feel and I of course like the berries. However, I like boreal forest so much and AHP lacks that. Boreal forest is so rare south of the Adirondacks, and walking through it in the Catskills makes me feel like I've traveled farther than I have. Cheap vacation.
AHP does also have a nice open coniferous stand lower down, through which the trail passes. If memory serves, it is white pine dominating with hemlocks beneath. I don't recall if there are norway spruce, but either way it's a nice area. AHP is definitely a Catskill gem, even w/o the northern tree species.
Matt