A massive river of lava is moving down Kilauea volcano on Hawaii’s Big Island as the ongoing eruption intensifies, forcing more people out of their homes and injuring at least one man.

Hawaii County Civil Defense officials said that late Saturday night a lava flow moving at 300 feet-per-hour reached Highway 137, one of the main highways in the Puna district. A section of the road was shut down.

The officials also reported that a lava flow had reached the Pacific Ocean. Lava entering the water creates laze, a type of volcanic gas that may endanger nearby residents.