Deaths toll rises to nearly 920 with more than 4,500 people missing, including two Irish citizens

Rescuers have reached previously inaccessible areas as Nepal appeals for international aid and continues to attempt to rescue 100 workers trapped in a hydropower plant tunnel.

Rescue teams say destruction from flash flood has made it difficult to even locate entry points of tunnel

Crews were in a race against time to find nearly 2,000 people unaccounted for

Hundreds believed trapped in hydropower tunnels

Rescue efforts intensify for hundreds of workers missing in Nepal's flood-hit hydropower projects. Mud and debris are blocking tunnel entrances, hindering access for rescue…