India orders security audit of tunnels after collapse in Himalayas

Summary: Indian Highway Authority to do safety audit of 29 tunnels Audit report to be

Created a robot that digs tunnels 100 times faster and 98% cheaper than drilling systems

(ORDO NEWS) -- If California-based startup EarthGrid achieves its goals, downed power lines and faulty

A network of man-made underground tunnels stretches across Europe

(ORDO NEWS) -- From the west of Scotland to the south of Turkey stretches a

Mysterious tunnels of Erdstall in Europe

(ORDO NEWS) -- Erdstall is a type of tunnel found throughout Europe, mainly in the

Hidden tunnels discovered under Yellowstone

(ORDO NEWS) -- Scientists at Virginia Tech have created the first map of underground pathways