To complete the Grassy network of trails, you'll need nerves of steel or extra time to clear rocks off the narrow ledge you must drive along. While the trail is scenic and creates a nice loop from the Grassy Creek Petroglyphs, one short section is very hazardous as you navigate a hill. Small round lava rocks continually fall from above and accumulate on the narrow ledge. You feel like you're driving on ball bearings, and you don't realize it until it's too late; you must keep moving unless you want to kick several hundred rocks off the edge. No camping was found along the route.
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