Caved In

John Palmer

Vincent

Samantha Palmer

Sophie (as Monica Birladeanu)

Emily Palmer

Miles Palmer

Hanz

Stephan

Carlo (as Tudor Vlad Jipa)

Muller

Ion

Luciano

Supervisor Frisch

When the spelunkers are going through the "egg chamber", a giant "queen beetle" shows up, and it's suggested that killing the queen will throw the nest into chaos. The problem with this is that queens only appear among social insects, such as ants, termites, bees and wasps. Beetles are scavengers, not social, and even the isolation suggested in this movie would not produce a queen-based communal structure. Scavengers compete for food; they do not co-operate.

John Palmer: Are you seeing what I'm seeing? Your plan isn't just falling apart, it's being ripped apart! By giant bugs!