The aftermath of a deadly tour bus crash in the U.S. state of Oregon.

On Sunday, nine people were killed and more than 20 others injured when a bus traveling from Las Vegas to Vancouver, British Columbia, lost control on the icy roads.

The bus crashed through a guardrail and plunged 100 feet into a ravine.

Around 40 people were on the bus, which was driving in an area known for its changeable and severe weather conditions.

The bus was reportedly carrying Korean tourists returning from a casino vacation in Nevada.