The Sheriff’s Department is searching for a Twentynine Palms woman who was last seen in the area Saturday. About 7 a.m. Saturday, Erin Corwin, 20, told her husband she was going to look for hiking trails in Joshua Tree National Park that she could hike with her mother when her mother arrives later this week, and has not returned. Corwin is three months pregnant. Her car, a blue 2013 Toyota Corolla, is also missing, although a possible sighting was reported in Joshua Tree National Park about 8 a.m. Saturday. Anyone with information about Erin Corwin should call the Sheriff’s Department at 760-366-4175.