Colorado adventure travel photographer Sergio Ballivian 

Adventure travelers ride 4x4 vehicles to the remote Sud Lipez region - a high-altitude desert in southwestern Bolivia.

Adventure travelers wait for the rain to stop on the Altiplano d

A muddy road as seen through the windshield of a 4x4 in Bolivia.

Vehicles are driven on seasonal informal roads on the Salar de U

Crosses next to the road near the Cumbre pass near La Paz, Bolivia mark where people died when their vehicles went over the edge.

A female camper travels across The Great Sand Dunes National Par

West Coast Trail - Day 4

Vehicles are driven on seasonal informal roads on the Salar de U

Tourists on salt flats in Bolivia

Travelers driver over a flooded salt flat

Trekkers reflected in a lagoon

Adventure travelers ride 4x4 vehicles to the remote Sud Lipez region - a high-altitude desert in southwestern Bolivia.

Trekkers leave their camp at Laguna Llivinosa (14,210') and head down to Botijlaka under the rugged valleys of Bolivia's Cordillera Real of the Andes..