"Escape the Collapsing Cave" is a mission objective in Star Wars: The Old Republic.
Nalen Raloch is collapsing the cave. You must escape it before you are buried alive.
After the dialog with Nalen Raloch immediately start running west towards the exit from the cave.
- Ignore the Flesh Raiders that run towards you and/or attack you. Attacking them would just be a waste of time, as your primary goal is to escape the cave alive.