Roaming the islands

[mandru]

But if there's a hole somewhere, I'll find it and be silly enough to fall into it :-() Thank heavens for fast travel... If I ever find it again, I'll point it out.

The road along the front of the area for the experimental kennels (in the hunter mission where you kill the rabid dogs with the RPG) has a rock embankment that conceals a hole such as the one you've described.  I was crabbing sideways following the [mini-map] illuminated mission boundary while scanning for one last dog to complete the mission and slipped into a hole much like the one you described fragger becoming irrecoverably stuck forcing a mission abort and restart due to fast traveling back to the outpost where the mission was on the bulletin board.

I've mentioned it before in an earlier post.  The irony does not escape me that if it turns out to be the same hole I was silly enough to fall into it first. 

[Art Blade]

that would be funny :-D

I recently found a place I remembered from a side mission on the Southern island which has some sort of command post on a slab of rock you can reach from the back at ground level or front using a ladder. I climbed (slid) down the ladder and wham! fell through the floor. Nice..

[Dweller_Benthos]

That sounds familiar, I think I did the same thing thing, at least I recall sliding down a ladder only to find that the ground wasn't so solid underneath me.