A man was rescued Saturday after being trapped for nearly 24 hours at the bottom of a 15-foot trench in a construction zone, authorities said.

A passerby discovered the man near North Crossing Drive and Clear Creek Drive in Wheat Ridge on Saturday night and contacted emergency services.

West Metro Fire Rescue crews responded at 9:30 p.m. and found the injured man stuck in a narrow hole, lying in mud and water. Officials said it is believed he had been trapped for close to a day and had been unable to get anyone’s attention.

Two firefighters descended a ladder into the trench to assess the man’s condition and prepare him for extraction, authorities said. The man was then secured in a basket and lifted to the surface using a rope system.

He was transported to a hospital with injuries that were not considered life-threatening, officials said. 

No further details about his condition were immediately available.