Explorer John Palmer (Christopher Atkins) has just agreed to take some time off from leading climbs and cave explorations to take his wife and kids for a traditional holiday to Greece when he is approached by Vincent (Colm Meaney) to lead a private exploration into some Swiss salt mines. Whilst his family are not happy they get to stay in a cabin by a lake whilst John works and as he is being paid silly money he can't really say no. What John doesn't know is that Vincent is the front man for Marcel (David Palffy) an incredibly ruthless man who is aware that 50 years earlier only one man survived the same exploration having gone looking for emeralds only to find giant black beetles.
Let me tell you what the most entertaining thing is about "Caved In", it is that it stars Christopher Atkins who 26 years earlier made his screen debut in "The Blue Lagoon" and whilst having worked continuously this is only the 2nd movie of his I have come across. Beyond that little titbit I am struggling to find anything to be enthusiastic about as we have an evil madman, some fake looking giant beetles and of course the dangerous of being underground. And of course we are talking a family man leading an expedition where there is a bad guy which means his family have to end up involved and in danger. But every bit of it is tacky to the point of bordering on being entertainingly bad.
What this all boils down to is that "Caved In" is not a good movie and one which after spending 93 minutes watching had not got the energy or enthusiasm to write more than the bare minimum on it. If you enjoy bad movies there is a chance this may amuse but watched for action it is simply terrible.