It's in Bartlett of course. To Quote "I don't know how they feel about folks traipsing about to search it out. There is no sign, so that might be a hint they hope you don't find it.... (just my guess)". Scroll to bottom of page. Glen New Hampshire
Interesting, but have you been here? NH State Parks - Madison Boulder Natural Area
I first saw this hunting Partridge with my Dad around 1946. There were steps and Iron railings on top in those days. Then of local color is Goodrich Rock, Then a little more distant is Piazza Rock and if that's not enough rock there is Mahoosuc Notch on and on.