Another tourist cave that had been abandoned for years, Manitou offers a physically challenging wild tour that includes sections discovered as recently as five years ago. Still missing is a large section that was open to tourists, complete with electric lights and hand-rails, until it flooded in the 1920s. Check out the Web site, www.caveofthewinds.com, for an in-depth probe.
At 7,000 feet, Spring Cave, which opens May 1, is one of the longest caves in Colorado, located less than a mile from the South Fork Trailhead, east of Meeker. In springtime, the stream that flows through the cave widens to form "Emerald Lake," which makes a full wetsuit a requirement for anyone heading into the back sections.