Check out Sarah S. King's article "The Earth Sublime" in this month's Art in America. King provides a synopsis of LAND/ART New Mexico which will "explore relationships of land, art, and community through exhibitions, site-specific art works, lectures, and a culminating book."
One of the most interesting pieces is Bill Gilbert's Matter of Fact: Walk to Work in which he walks for three days from the Galisteo Basin to the University of New Mexico. The website describes that he walks "along a path that parallels the commute to work he has made for the past 20 years. Following as straight a line as the topography and legalities allow..."
which of course reminds me of Richard Long's Ten Mile Walk, England, 1968.