NASA Robots Rove Through Caves for Underground DARPA Competition (Video) | Space
Inside the Pentagon's $82 million Super Bowl of robots - The Washington Post
Remote control robots discover ancient tunnels in Peru | E&T Magazine
This Company Wants To Send Robots Into Lunar Caves - Universe Today
Multimedia Gallery - Cave Crawler is a research robot designed to autonomously map underground mines and aid in rescue. | NSF - National Science Foundation
Breadcrumbing robots could roam Martian caves like Hansel and Gretel | Space
Drones and ground robots of the Faculty of Electrical Engineering will study the Býčí skála cave complex - News service - Czech technical university in Prague
Australian Team Running Its Own DARPA-Style Cave Challenge to Test Robots - IEEE Spectrum
Operating robots underground - Defense Update:
NASA is training human-like robots to explore caves on Mars - CBS News