Hoosier Pass, elevation 11,542 is located on State Highway 9 between Alma and Breckinridge straddling the Continental Divide in Park and Summit Counties. It serves as the dividing line between the Mosquito and Tenmile mountain ranges. There is a very popular 2.8 mile hiking trail at the summit of the pass with an elevation gain of 688 feet. In the foreground of this photo is the rare plant, Hoosier Pass Ipomopsis. Photo by Bernie Nagy.

The Columbine Lake Trail in Silverton, CO is located in the San Juan National Forest, about 4.8 miles north of Silverton on Highway 550, off Ophir Pass Road. The trail is popular, but considered strenuous, climbing 2,195 vertical feet in about 7.9 miles (out and back) through 16 discernible switchbacks. It goes through spruce-fir forests to alpine meadows (pictured here) and spectacular flowers, ending up in a basin at the glacial Columbine Lake.

Ernie Marx took this photo at Walden Reservoir in Jackson County. Walden Reservoir, located just outside of Walden CO, is better known for birding with dabblers, divers, shorebirds, gulls, terns, and waders found there. Golden eagles, prairie falcons, pelicans, gulls, and raptors are known to frequent the area. The Bureau of Land Management allows disbursed camping around the reservoir. The masses of pink flowers are Water Smartweed, (Persicaria amphibia").

The Great Sand Dunes National Park, located on the San Luis Valley, and next to the Sangre de Christo Range, was designated as a national monument in 1932, and a national park in 2000. It contains 750 foot sand dunes in its 30 square mile dune field, which are the tallest sand dunes in the North America. Medano Creek flows by the base of the dunes creating a wonderful beach that children love. There are also trails which lead to forests, wetlands and alpine lakes like Medano Lake,

The Flatirons are the city of Boulder's iconic rock formations that lie on the east side of Green Mountain. There are five flatirons, so named one through five that have a maximum elevation of 8,138'. The Flatirons are a part of the Fountain Formatiion of sedimentary rocks formed 280 million years ago. The flowers in the foreground are Foothills Arnica (Arnica fulgens). Photo by Anthony Massaro.

Purgatoire River, known locally as the Purgatory River (Purgatoire means purgatory in French), was named by French trappers to commemorate Spanish explorers killed in a Native American attack. The river is located in southeast Colorado and flows through the Comanche National Grasslands in Otero County to its confluence with the Arkansas River at John Martin Reservoir. The cactus in the foreground is Tree Cholla (Cylindropuntia imbricata). Photo by Sue Keiffer

Near Buena Vista in central Colorado is Lake Ann nestled in a small cirque at 13,000 feet in the Collegiate Peaks Wilderness of the San Isabel National Forest. Famed for its aquamarine color, the lake is accessed by the 6.6 mile long Lake Ann Trail. The trailhead is accessed by a 4WD road for high clearance vehicles only. The trail offers spectacular views of the "Three Apostles" and 14,003' Mt. Huron. Photo by Irene Schonle.

Mathews Winters Park is located right on the edge of the Denver metropolitan area next to the intersection of I-70 and C-470. Owned and operated by Jefferson Open Space in Jefferson County, the park contains 2,461 acres and 12.2 miles of trails which provide access to the City of Denver Red Rocks Park, the 1860s settlement, now ghost town, of Mount Vernon and the Dakota Hogback. You will see lots of foothills native plants here like the Boulder Raspberry (Rubus delicosus) in the foreground of this photo. Photo by Terry Bezouska. Boulder-Raspberry-(Rubus-delicosus)-at-

The Maroon Bells are arguably the most famous and photographed peaks in Colorado. The twin peaks, Maroon Peak and North Maroon Peak, both 14ers, are located up Maroon Creek Road off Highway 82, 10 miles west of Aspen and 16 miles from Snowmass Colorado. The maroon stripes were formed by the weathering of hematite, an iron bearing material. Maroon Lake occupies the basin at the foot of the mountains. There are several hiking trails that are so heavily used that reservations are required. Photo by Anna Foderaro.

The Snowy Mountains are not actually in Colorado, they are in Wyoming. But they are so spectacular and so close to our northern border, that we can't resist including them in our landscape gallery. The range, located in the Medicine Bow-Routt National Forest runs east and west for 29 miles. The range is accessed by the Snowy Mountain Scenic Byway which climbs from 8,000 - 10,847' elevation along these gorgeous rocky mountains with beautiful lakes at their foot. Several excellent trails are found along the byway around the lakes and up into the mountains. Photo by Loraine Yeatts.