The game begins in the Sierra Mountains, where an asteroid has crashed.

This trail began as an immigrant wagon road, the first road built across the central Sierra mountains.

Be warned: some of the walks up the Sierra mountains are a stretch, so put those walking legs on before launching your flying dreams.

Roy is pursued until he climbs one of the Sierra mountains, where he holes up overnight.

"We're coming into the Sierra mountains now," Jay announced.

This weekend, slopes in the Sierra Mountains were better suited for mountain biking than winter sports.

Those messages were ones that had been dispatched from the old headquarters, which had moved about in several states east of the Sierra Mountains.

For years, he lived with his wife in a cabin in California's Sierra Mountains, without running water or electricity.

Ow can we go and do a gargle at the saloon-bar on top of the Sierra Mountains?

Dr. Crawford begins the construction of a vast city located under the Sierra Mountains.

The game begins in the Sierra Mountains, where an asteroid has crashed.

This trail began as an immigrant wagon road, the first road built across the central Sierra mountains.

Be warned: some of the walks up the Sierra mountains are a stretch, so put those walking legs on before launching your flying dreams.

Roy is pursued until he climbs one of the Sierra mountains, where he holes up overnight.

"We're coming into the Sierra mountains now," Jay announced.

This weekend, slopes in the Sierra Mountains were better suited for mountain biking than winter sports.

Those messages were ones that had been dispatched from the old headquarters, which had moved about in several states east of the Sierra Mountains.

For years, he lived with his wife in a cabin in California's Sierra Mountains, without running water or electricity.

Ow can we go and do a gargle at the saloon-bar on top of the Sierra Mountains?

Dr. Crawford begins the construction of a vast city located under the Sierra Mountains.