Investigating troopers have determined that the Dodge Ram pickup crossed the line on U.S. Highway 20 and struck the Mercedes passenger van, Police said in a Tuesday statement. Police are still investigating what caused the driver to veer into oncoming traffic.

A fiery van crash in eastern Idaho, claiming the lives of six, and possibly seven, foreign nationals, serves as a stark reminder of the hidden dangers lurking beyond the scenic beauty of Yellowstone and Grand Teton National Parks.

Chinese and Italian tourists were reportedly among seven killed in a collision between a tour bus and a truck near Yellowstone National Park on Thursday. Eight others were injured when a Dodge Ram pickup truck and a Mercedes passenger van carrying 14 sightseers crashed on a highway in eastern Idaho,