Altamont Pass, Rail mountain pass in Diablo Range, California.
Altamont Pass connects Livermore Valley with San Joaquin Valley through two distinct crossings at different elevations in Northern California's mountain range.
The pass changed names from Livermore Pass, named after landowner Robert Livermore, to Altamont Pass during the California Gold Rush period.
Two railroad lines traverse the lower crossing at 226 meters, while Interstate 580 runs through the higher crossing at 308 meters elevation.
The railway corridor supports both Union Pacific freight operations and regular Altamont Corridor Express commuter train services between valleys.
Numerous wind turbines of the Altamont Pass Wind Farm generate electrical power by capturing the strong winds that flow through this natural corridor.
Location: California
Elevation above the sea: 308 m
GPS coordinates: 37.74583,-121.65833
Latest update: March 6, 2025 11:29
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