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Window rock is one of the geological sites along the trail in Picketwire Canyonlands on the Comanche National Grassland on Tuesday May 8, 2007 in La Junta, Colo. The Army is planning to expand it's 235,000 acres and add an additional some 418,000 acres f

Window rock is one of the geological sites along the trail in Picketwire Canyonlands on the Comanche National Grassland on Tuesday May 8, 2007 in La Junta, Colo.  The Army is planning to expand it's 235,000 acres and add an additional some 418,000 acres f