The driver killed when his car was hit by a Napa County mudslide was identified Wednesday afternoon as a 22‑year‑old Fairfield man.

Hernan Reyes‑Aguires, who has family in Napa, was headed home Tuesday afternoon on rural Highway 121 when the rocks and mud fell onto the highway. A boulder weighing several tons hit the side of his car and the impact crushed the driver’s side, shoving the 1997 Toyota down the hill about 100 yards, according to Capt. Steve Blower of the Napa County Sheriff’s Office.

The crash was reported at 5 p.m. Cal Fire firefighters traversed the unstable ground to get to the vehicle and found the man dead inside.

Because the area above the highway remained unstable, the CHP closed a stretch of the road to traffic between Wild Horse Valley Road and Wooden Valley Road in east Napa County. That was opened about 1 p.m. Wednesday after state engineers surveyed the hillside, and the wrecked car and body were removed.

You can reach Staff Writer Randi Rossmann at 707‑521-5412 or On Twitter@rossmannreport.