Crystal Valley Mup is a hiking and biking trail in Castle Rock, Colorado. It is within Rhyolite Regional Park. It is 1.4 miles long and begins at 6,587 feet altitude. Traveling the entire trail is 0.9 miles with a total elevation gain of 124 feet. Rhyolite Regional Park, Open Space On-Street Parking, and another parking are near the trailhead. The 3-panel kiosk entry information can be seen along the trail. There are also restrooms along the trail.
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