Lichen covered rocks at the base of Arrigetch Peaks. Gates of the Arctic National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.gaar0033.html Red lichen detail, Loxahatchee NWR. Florida, USA http://www.terragalleria.com/america/florida/florida-misc/picture.usfl4063.html Melting snow and lichens, Valley of Ten Thousand smokes. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm21134.html Summit of Cadillac Mountain during heavy fog. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad44839.html Gneiss and lichen. Black Canyon of the Gunnison National Park, Colorado, USA. http://www.terragalleria.com/parks/np-image.blca45110.html Close-up of rock with lichen. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33851.html Lichen-covered rocks. Baxter State Park, Maine, USA http://www.terragalleria.com/america/maine/baxter-state-park/picture.usme44588.html Close up of rock and lichen. Vermilion Cliffs National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/vermilion-cliffs-national-monument/picture.usaz8965.html Lichen covered rocks and pine cones. Great Basin National Park, Nevada, USA. http://www.terragalleria.com/parks/np-image.grba8538.html Field of large lichen-covered boulders and aspens in fall foliage. Rocky Mountain National Park, Colorado, USA. http://www.terragalleria.com/parks/np-image.romo0627.html Boulders at the base of Arrigetch Peaks. Gates of the Arctic National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.gaar0032.html Lichens close-up, Schoodic Peninsula. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad46079.html Trunks covered with red lichen, Loxahatchee National Wildlife Refuge. Florida, USA http://www.terragalleria.com/america/florida/florida-misc/picture.usfl4062.html Lichen-covered slabs in the heavy mist, Mount Cadillac. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad44840.html Dark rock and moss, Aquarius Lake. Gates of the Arctic National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.gaar21080.html Lichens on light granite, Schoodic Peninsula. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad46080.html Multicolored lichen on granite slab, Cadillac Mountain. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad44841.html Lichen-covered rocks and red berry plants in fog, Cadillac Mountain. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad44838.html Close-up of lichen on granite, Schoodic Peninsula. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad46081.html View over Atlantic from top of Mt Cadillac with granite slab covered with lichen. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad20272.html Granite slab with cracks and lichen, Mount Cadillac. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad44842.html Close-up of orange lichen on dark rock, Schoodic Peninsula. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad46078.html