There are also a couple of divers' bunkhouses
Do you have details / website links? I'll add these.
Not bothered about putting my email on there - it's already been on the front page of two other websites I look after for years. Gmail seems to sort of the bulk of the spam.
I'm almost inspired to make a trip (just have to overcome the dislike of a 5 hour drive)
The caves are (probably) not worth a 5 hour drive, however Dorset certainly is. Great walking, kayaking, climbing, sailing, etc., etc. Plenty to fill a long weekend or week with.