Of all the delves in Tamriel, False Martyr's Folly is the most uninteresting, boring, empty, unchallenging and unfinished one.
Except for the one quest that you do in there, there's nothing to see, nothing to do, no containers to loot. The mobs are recycled thunder bugs and hoarvors which I tend to simply ignore, since they don't drop anything that's even remotely interesting.
The boss is down faster than you can yawn (mind you, I'm not one of those 'we need hardcore gaming' fans, but this is subpar even for relaxed, casual old me.
It's as if somebody at ZOS said 'oh my Gods, we forgot to put a second delve!' a day before release, grabbed an empty cave, dropped in a few mobs and said 'all done'.
This one would *really* benefit from a bit of a rework... for the next patch, maybe?