Joshua Tree National Park (TI-226) Grand Canyon The last four discuss the

The last four discuss the suitability for wastewater disposal in septic-tank soil-absorption systems

trip planning

This map shows many of the features that have shaped--and continue to change--our dynamic planet

and geological sites on the six continents

Plates: 28 pl

Joshua Tree National Park (TI-226) Grand Canyon The last four discuss theThe two distinct ecosystems of the Colorado Desert and the Mojave Desert meet in southeastern California in the Joshua Tree National Park. National Geographic's Trails Illustrated map of the park delivers unmatched detail and valuable information to assist you in your exploration of this fascinating land of surreal geologic features shaped by strong winds, unpredictable torrents of rain, and climatic extremes. Created in partnership with local land