Nepal tunnel survivor Sanjay Sah recalls his harrowing 10-day ordeal after a devastating flood at a hydropower project.

Nepal tunnel survivor Sanjay Sah recalls his harrowing 10-day ordeal after a devastating flood at a hydropower project.

Nepali hydropower worker Sanjay Sah survived in total darkness inside a tunnel flooded by the deadly flash flood that struck the China-Nepal border on August 26, drinking muddy water and praying that…