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Routes
Hiking trails & Routes
Contra Costa County
Clayton

Black Diamond Shaft – Jim's Place loop from Clayton

Routes
Hiking trails & Routes
Contra Costa County
Clayton

Black Diamond Shaft – Jim's Place loop from Clayton

Moderate

6

hikers

Black Diamond Shaft – Jim's Place loop from Clayton

03:49

13.1km

350m

Hiking

Moderate hike. Good fitness required. Easily walkable paths. The starting point of the route is accessible with public transport.

Last updated: August 20, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Black Diamond Mines Regional Preserve

Waypoints

A

Start point

Bus stop

Get Directions
1

5.89 km

Black Diamond Shaft

Highlight • Historical Site

This once 150 feet deep air shaft was put in place to ventilate a coal mine to keep it free from dangerous gasses. There is a short tunnel to access …

Tip by

2

6.35 km

Jim's Place

Highlight • Cave

This unusual little underground dwelling's origin is unknown. From the interior, you can see a round stovepipe hole, a square skylight and a shelf opening.

Tip by

B

13.1 km

End point

Bus stop

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Way Types & Surfaces

Way Types

6.32 km

3.60 km

1.89 km

1.24 km

< 100 m

Surfaces

7.19 km

4.63 km

1.24 km

< 100 m

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Elevation

Elevation
Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (420 m)

Lowest point (120 m)

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Weather

Powered by Foreca

Today

Wednesday 28 October

22°C

7°C

0 %

Additional weather tips

Max wind speed: 8.0 km/h

to get more detailed weather forecasts along your route

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