Photo of the Day
climbers along a trail in Nepal
Kali Gandaki River, Nepal
This Month in Photo of the Day: Nature and Weather Photos
Climbers and scientists follow a trail above the Kali Gandaki River in Nepal's remote Mustang region. More than 60 feet above are rows of unexplored man-made caves dug centuries ago. There may be thousands in the region.
See more pictures from the October 2012 feature story "Sky Caves of Nepal."
