An Alameda County father and his two young children were discovered around 8 p.m. in the wilderness of western Sierra County.
Search and rescue crews said the man and his two kids, ages 3 and 5, were attempting to hike out when they were spotted by a California National Guard Black Hawk helicopter.
But what happened in the 72 hours since they were last since still remains a mystery.
Sierra County sheriff deputies said the family was placed in an ambulance just as a precaution after landing along Highway 49.
None of them appeared to be injured. FOX40 was there as the family was being checked out by paramedics.
Until Thursday night, Nicholas Vlahos and his family were last seen leaving their campgrounds Tuesday night.
They were in a 2015 Toyota Tacoma that had four wheel drive, according to search and rescue in Sierra County, which also said the family had plenty of food and water.
Family members said Vlahos was supposed to be back with his kids later that night, but that never happened.
They were discovered Thursday night about 20 miles from where they were camping with other family members earlier in the week at the Fiddle Creek campsite.
Search and rescue crews said when that National Guard helicopter found them, the family was trying to hike out.
The Sierra County Sheriff's office did not immediately confirm if that truck had broken down, or why the family had been missing.