My favorite hike
https://youtube.com/playlist?list=PL6WIWapSWYke3EVLjOO3UIE3JQUB3zWpo
What an experience that trail is!
Successfully completing it gives a real feeling of accomplishment,
and some great views!
The comments to those videos are worth sampling,
to see what other people thought about that trail.
This gives a nice description of the trail:
https://www.northeasthikes.com/knife-edge-katahdin-baxter-state-park-maine/
Or just watch this 10 minute video
https://youtu.be/5n5iYfqh-xo
(skimming over the unfortunate ad).