This natural wonder, the Altschlossfelsen in Eppenbrunn is a red dense rock formations is not in the southwest of the US, but in the southwest of the Palatinate, in close proximity to the community Eppenbrunn on the border to France. 

However, you must first fight yourself through the Palatinate Forest to get to this colorful group of red sandstone rock.

For a particularly intense color experience, you should visit in the spring, because then there is no foliage in the path of the sun and the rocks look beautiful and illuminated.