While there is only one result on Flickr for Devils Twoer there are 8,511 for Devil's Tower. Elsewhere you can find a nice close up of the igneous intrusion and some eerie photos from a rainy day visit to the tower. There's also a nice view looking almost straight up the tower and there is also some discussion about Devil's tower as possibly being a laccolith. The tower also shows up on lots of climbing blogs, such as this cool climb to the top.