December 2008 An intaglio or geoglyph is a sort of large petroglyph on the ground, best seen from an airplane. The ones in South America are more well-known, as are the ones near Blythe, California. This is the only one I know of in Arizona. It's an interesting...
Interest - BioNon-motorized sports: Backpacking, kayaking, river rafting, some mountain biking as well.