One more spoiler ahead — beware! 😄
XXXXXXXXXXXXXXXXXXXXXXXXXX
I noticed your description of the unstable wooden pathways, so I thought: I wanted to see how much the wooden planks could hold, maybe I should try to "...." and it actually worked. 😄
I found the entrance and the "insert" hint, but I am currently fighting with finding the exact wording of the right command. 😄
...and of course, that depends on whether I have the correct object.