Many thanks to Heidi for hosting this week. A great theme, one that I really like. In my travels to various national parks in the south-west of the US, I've photographed a lot of spectacular rock formations. The hardest part here was deciding which ones to use!!
1) The incredible 'hoodoo' rock formations of Bryce Canyon.
2) Zion National Park has some spectacular rock formations.
3) One of the walls of Red Rock Canyon. To give you an idea of scale, if you look carefully at the centre of the photo you can just see two men climbing on the rocks.
4) Beautiful sandstone arch at Valley Of Fire.