Trail builders in a tiny Alaska town are using crushed shale for jumps and berms
Thunder Mountain Bike Park in Juneau uses locally-sourced crushed shale to build weather-resistant trails that require minimal maintenance in Alaska's wet climate.

Thunder Mountain Bike Park in Juneau uses locally-sourced crushed shale to build weather-resistant trails that require minimal maintenance in Alaska's wet climate.

Thunder Mountain Bike Park in Juneau uses locally-sourced crushed shale to build weather-resistant trails that require minimal maintenance in Alaska's wet climate.
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Thunder Mountain Bike Park in Juneau uses locally-sourced crushed shale to build weather-resistant trails that require minimal maintenance in Alaska's wet climate.
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