This landscape photo was taken in Rocky Mountain National Park, Colorado, USA. Several aspen trunks with clear textures stand scattered in the frame, the ground is fully covered by bright green dense ferns, and gray boulders with lichen are scattered at the corners. The whole area is full of vibrant original natural vitality. The symbiosis of ferns and aspens in high-altitude forest is a very representative local understory landscape, the bright emerald green tone brings soothing relaxing feeling to viewers, showing typical North American temperate mountain forest style.