Near Volcanic Trail
Sign #8: "This huge, reddish-brown block of lava fell from the cliffs to the upper right. The lava cooled and hardened while it was still moving, resulting in dramatic fragmentation, known as "autobrecciation" (self broken)."
Near Volcanic Trail
Sign #11: Siesta Valley
Near Volcanic Trail
Mount Diablo view
Near Volcanic Trail
Down to the stone maze
Near Volcanic Trail
Mazzariello labyrinth in the quarry pit

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Hike Trail

Volcanic Trail

5.0 (1 Rating)
Volcanoes formed this area.
1
mi
Distance
185
ft
Gain
easy
Difficulty
BirdingViews

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Route Details

Flatter
Steeper
0.98mi
Distance
185ft
Elevation Gain
34ft
Elevation Loss
15%
Max Grade
1,576ft
High Point
1,389ft
Low Point
Path Type
Point to Point
Description
You can enjoy views of Siesta Valley, which were formed by volcanic activity in the area. The trail is part of the self-guided tour of Round Top, and contains several stops to view geological formations.

Route Conditions

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Anonymous Adventurer
All Clear
January 19, 2025
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Contributors
Wendy Wheeler