Bogota - Colombian rescue officials say it will take at least a week to unearth about 30 people who were buried by a landslide as they changed from one bus to another because a mountain road was blocked.

Regional disaster agency chief John Freddy Rendon says he doesn't expect any survivors from Monday's landslide between the towns of Giraldo and Canasgordas northwest of Bogota.

He says victims include children, pregnant women and the inhabitants of five houses.

Witnesses described intense noise as first rocks and then earth swept over the road.
President Juan Manuel Santos was headed to the scene Tuesday.

Heavy rains in recent weeks across Colombia have triggered flooding that has claimed at least 74 lives.