The accident happened near Jangkla Morh in Sainj tehsil.
The death toll is likely to go up.
“The school bus was going from from Kullu to Sainj on Neoli-Shansher road in Sainj valley. Number of deaths may rise. Rescue process is under way, the incident happened around 8am. School kids also believed to be travelling in the bus, said Kullu DC Ashutosh Garg.
According to report, around 35-40 persons were travelling in this bus.
Rescue operation is under way at the accident spot. So far, 16 bodies have been retrieved from the gorge.