One of my favorite types of "hiking topograhy/situation" is along an open ridge where the trail drops away dramatically on either side. I've often encountered these parts of a hike above treeline, although that doesn't necessarily have to be the case as long as it is open enough from the trees here and there to have abundant views and actually feel like one is hiking along a narrow ridge. I am very interested in "ridgebagging" as many knife edge ridgewalks as I can in New England, so any good or unique suggestions are very welcome!
Favorite "Knife Edge" Ridgewalks I have done (No particular order)
Knife Edge, Katahdin, Maine
Hamlin Ridge, Katahdin, Maine
Franconia Ridge (mainly Lincoln over Little Haystack), Lincoln, New Hampshire
Castle Ridge, Jefferson, New Hampshire
Airline Trail (mainly near Chemin des Dames junction), Adams, New Hampshire
Bondcliff, Bond, New Hampshire
Saddleback (sections between Saddleback & Horn), Saddleback, Maine
Bigelow (sections around Avery & West Peak), Bigelow, Maine
Mt. Clay (somewhat on sections of the loop, esp. w/ Great Gulf side), Clay, New Hampshire
Favorite "Knife Edge" Ridgewalks I have done (No particular order)
Knife Edge, Katahdin, Maine
Hamlin Ridge, Katahdin, Maine
Franconia Ridge (mainly Lincoln over Little Haystack), Lincoln, New Hampshire
Castle Ridge, Jefferson, New Hampshire
Airline Trail (mainly near Chemin des Dames junction), Adams, New Hampshire
Bondcliff, Bond, New Hampshire
Saddleback (sections between Saddleback & Horn), Saddleback, Maine
Bigelow (sections around Avery & West Peak), Bigelow, Maine
Mt. Clay (somewhat on sections of the loop, esp. w/ Great Gulf side), Clay, New Hampshire