- I wonder what the oldest vandalization is?
- Could it be that there are many others in the area, which is why this hasn't been formally discovered before? How many times has it been "rediscovered" in the last 700 years?
- Is it actually a rabbit hole (as in: a hole used by rabbits) or just a "door"? Seems likely that it "looks" like a rabbit hole, but is actually a (perhaps maintained) door into the cave.