Helicopter rescue teams were working on Friday to rescue around 100 people trapped inside a tunnel at a hydropower project in Nepal swamped by a devastating flood two days earlier.“Our focus is in search and rescue of people … some people are trapped in the tunnel of Trishuli 3A hydropower project,” Nepal Army spokesman Raja Ram Basnet said.“Two helicopters have been dispatched but it is challenging because it is tough to even locate the entry points of the tunnel. Relief efforts are also...