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Discover
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Natural Monuments

United States
California
Contra Costa County

Black Diamond Mines Regional Preserve

Discover
Places to see

Natural Monuments

United States
California
Contra Costa County

Black Diamond Mines Regional Preserve

Highlight • Historical Site

Black Diamond Mines Regional Preserve

Recommended for

Mountain biking

by 1 explorers

This Highlight is in a protected area

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    Location: Contra Costa County, California, United States

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    Tips

    January 9, 2024

    Mountain biking

    This preserve is a treasure trove of history, home to the remnants of three mining towns, including former coal and sand mines. The park features include an underground visitor center, guided tours of a former sand mine, and 60 miles (97 km) of trails to explore that crisscross the rolling foothill terrain. The trails offer stunning views of the surrounding landscape, which is a mix of grassland, California oak woodland, California mixed evergreen forest, and chaparral, making it a nature lover's paradise.

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    Routes here

    Best routes to Black Diamond Mines Regional Preserve

    5.0

    (6)

    6

    riders

    1. Stewartville & Ridge Trail loop — Black Diamond Mines Regional Preserve

    13.4km

    01:30

    420m

    420m

    Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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    Moderate

    Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

    Moderate

    Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

    Easy

    Details

    Informations

    Elevation 250 m

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    Wednesday 4 February

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    Additional weather tips

    Max wind speed: 8.0 km/h

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    Location: Contra Costa County, California, United States

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