Mark John Dreibelbis was 15 when he was murdered on February 10, 1973, in Santa Cruz County, California. He was one of four teenage boys—Robert Michael Spector, David Allan Oliker and Brian Scott Card were the others—who had been camping in Henry Cowell Redwoods State Park when they encountered Herbert Mullin.

After the teens refused, Mullin left and returned the next day, fatally shooting all four. The bodies of Mark Dreibelbis and his companions were not discovered until February 17, 1973.

Mullin was later identified as schizophrenic and said he committed murders to prevent earthquakes; his spree ultimately included 13 victims before he was caught. He was convicted and given life sentences with the possibility of parole in 2025. Does anyone have memories of the campers or the park from that week in February 1973 that could add detail to what happened?