Photo: Twitter/Kootenay National Park

In a clear case of understatement, DriveBC warns drivers there are "rocks on the road" on Highway 93 north of Radium Hot Springs.

Make that really massive rocks.

Kootenay National Park rangers posted a photo of said "rock" – and it's a whopper that appears to be bigger than a pickup truck.

Another large boulder can be seen in the background, along with smaller rocks scattered across the road.

The park more accurately tweeted: "A boulder is blocking the highway 7 km north of Radium Hot Springs."

DriveBC did acknowledge that traffic is reduced single lane, alternating in the area.

Crews and flaggers are on the scene, and motorists should expect delays.