Vale Da Lua - Brazil

Vale Da Lua is a stone basin that has been carved out by the San Miguel River. The name translates to valley of the moon and was given that name because the erosion of the rocks by the river has left them smooth, and in shades of gray similar to the look of the moon. The valley has some of the oldest rock formations in the world, with an estimated age of 1.8 billion years old. The river has created caves, grottoes, waterfalls and bizarre rock formations, to form a labyrinth in the narrow canyon walls. Seen from space, the area is the most luminous on earth. Quartz and the smoothness of the rocks cause the glow. The surrounding forest is abundant with wildlife and lays claim to many varieties of orchids. The river has made the area a work in progress, as it continues to erode and change the landscape.