Park officials posted this photo on Twitter showing the structure sliding down the cliff.Golden Gate National Recreation Area

• A World War II battery bunker fell off a cliff onto a San Francisco beach, officials said Monday.

• It is the latest in a series of landslides across California that have resulted from saturated soil.

• Record rain and flooding have plagued the state steadily since New Year’s Eve.

A huge WWII-era military building tumbled off a sandy cliff onto a San Francisco beach.

The incident at Fort Funston, a city park with 200-foot oceanfront bluffs, is the latest in a series of landslides in Northern California caused by a barrage of heavy rainstorms.

The Golden Gate National Recreation Area reported the incident and shared a photo on Twitter Monday.

“Beachcombers at Fort Funston today will share the beach with a WWII military structure that was undermined when saturated cliff sand slid onto the beach,” the tweet reads.

“Coastal authorities encourage visitors to exercise caution near post-storm saturated hillsides and coastal bluffs as they enjoy weeks of sunny days indoors,” the Golden Gate National Recreation Area post said.

A spokesman for the San Francisco Fire Department told SFGATE that the building was a former battery bunker.

Aerial video footage from local news station ABC7 shows the bunker at the base of a sand slide sliding down a high cliff.

Since New Year’s Eve, California has weathered a spate of atmospheric flows — long, narrow streams of water vapor from the tropics that can carry as much water as the average river at the mouth of the Mississippi.

The record-breaking storms and flooding have caused 19 deaths across the state, along with road closures, evacuations, power outages, sinkholes and mudslides. The deluge is finally set to end this week.

Still, the attack hasn’t brought in enough water to end the multi-year mega-drought plaguing the state. Scientists expect both drought and flood extremes in California to become more severe with rising global temperatures, including powerful atmospheric flows like these.

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