BIG BEND NATIONAL PARK - A central Texas man has died during a hike in Big Bend National Park.
On Tuesday, David Busch of Dripping Springs, Texas, began to feel nauseous.
He sat down but stopped breathing.
His partner went to get help and Park Rangers and Border Patrol began a search.
The search team found him but it was too late.
An autopsy has been ordered to find the cause of death.