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Diamond Swamp

Stay Safe

In Oregon, a bicycle is legally considered a vehicle, and the same Oregon road laws apply. Please “be seen” and practice safe riding. Vehicle traffic, farm equipment and narrow shoulders exist on many Oregon roads, and you may find that construction projects, traffic or other events may cause road conditions or signage to differ from the map results, ride descriptions and directions. For travel options plus weather and road conditions, visit tripcheck.com, call 511 (in Oregon only), 800.977.6368 or 503.588.2941. Routes listed on this website are for informational purposes and intended as a reference guide only.

The lowlands of Diamond Swamp feature lava fields formed 25,000 years ago when molten basalt billowed up through fissures in the earth and spread across a dry lakebed. Before the initial layer cooled, more molten rock thrust it upward, creating some of the most diverse basaltic features found anywhere in the United States. The road leads to Diamond Craters Outstanding Natural Area, a curious array of collapsed craters, lava domes, lava tubes, wrinkled ridges, cones, spires and other formations.

This is a major stop on the Diamond Loop Tour Route.

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Contact Info

  • Address:
    Diamond Swamp
    Diamond, OR 97722

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