This barred tunnel was once a bustling entrance to the Star Mine, one of the most active coal mines in the area, providing a livelihood for many families. The rusted bars that now block the entrance are a stark reminder of the mine's past glory and the hard work that went into extracting coal from deep beneath the earth's surface.

Sue

January 12, 2024

Hiking

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#1.

Star Mine and Stewartville Trail Loop

11.0km

01:05

240m

This easy 6.9-mile mountain biking loop in Black Diamond Mines Regional Preserve offers scenic views, historical sites, and 782 feet of elev

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Easy

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#2.

Stewartville Trail – Star Mine loop from James Donlon Boulevard & Gentrytown Drive

18.1km

01:46

430m

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

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Moderate

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Elevation 160 m

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Wednesday 25 March

28°C

14°C

0 %

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Max wind speed: 17.0 km/h

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Location: Contra Costa County, California, United States

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Star Mine

#1.

Star Mine and Stewartville Trail Loop

#2.

Stewartville Trail – Star Mine loop from James Donlon Boulevard & Gentrytown Drive

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