The Lower Ice Cave is an open area of rock where ice covers the front to create an ice cave. Great news, Colorado: Do you remember a few weeks ago when we mentioned that an elaborate ice castle was coming to Colorado? The perpetual Ice Cave is a natural phenomenon made possible by a combination of physical factors forming a natural ice box; a 20 foot thick mass of ice accumulating in a well insulated cave of porous lava and shaped just right to trap cold air, continually generating new ice as rain water and snow melt seep down and freeze. The Ice Caves Climbing. Get to the trailhead before 7 a.m. We started hiking about 6:45 a.m. and had it to ourselves. 9 Total Climbs. All Locations > Colorado > Independence Pass > Grottos Day Use Area. The Grottos Trail off of Independence Pass near Aspen, Colorado, has geological wonders including unusual boulders, an ice cave and cascading waterfall. To be the crowds, do what my friend Lisa and I did. You Will Never Forget Your Visit To This Unbelievable Colorado Ice Cave. It is officially open and even more amazing than we could have imagined! Ice Castles in Dillon, Colorado. As one of the more photographed displays Colorado offers, the ice castles allow visitors the opportunity to walk inside and around 25 million pounds of ice with an ever-changing colored display of twinkling LED lights embedded into the ice itself. Climbing Area Map This ... Park at the grotto wall day use, walk across the wood bridge and follow the signs to the Ice caves. This is a winter site found along Koper’s Trail in Rifle Mountain Park. Grottos Trail is very popular. Photo by Dillon Colorado Facebook. Rifle, CO – Ice Cave. From the parking lot, start on the Piedra River Trail for several hundred yards, then follow the old road bed to the right. Directions to the Ice Caves: Follow the directions to the Piedra River Trail to access this trail. This is an easy, short trail up Ice Cave Ridge. The Ice Castles are back for the fourth time in Colorado, and soon you can check them out in Dillon. -Daryn Butler. The early start also explains the no makeup look. Route Finder - Best Climbs for YOU! The fissures on the side of the ridge contain snow deposited through the winter, protected from the sun.