I own a challenge cache that uses cache elevation info to determine qualifications, GC1ZAZG, High in Colorado Challenge Cache. I've noticed that elevations for many of the caches have changed in the past couple of weeks. Most of them didn't change much. One changed over 500 feet but appears to be much more accurate now. Do you know if this is an ongoing update of the elevation info or was that a one time thing? Can you share where you get the elevation data from?
