A rural Gold Hill woman remained in critical condition Monday evening from injuries suffered when an early-morning fire gutted her small trailer at an RV park, authorities said.

A rural Gold Hill woman remained in critical condition Monday evening from injuries suffered when an early-morning fire gutted her small trailer at an RV park, authorities said.

Karen Hoffman, 48, was in the intensive-care unit at Rogue Valley Medical Center in Medford with what firefighters said were injuries from smoke inhalation during the 3:06 a.m. fire at the Cyprus Grove RV Park, 1679 Rogue River Highway.

Hoffman was alone in the residence — a fifth-wheel trailer estimated at 18 feet long — when the fire broke out, said James Chapman, a firefighter and emergency medical technician from the Rogue River Rural Fire Department.

Hoffman was able to escape alone and ran to the park's manager, who telephoned firefighters, Chapman said.

When firefighters arrived, "there were already flames shooting through the roof," Chapman said. "It was pretty much a loss at that point."

Firefighters knocked down the flames in about eight minutes, Chapman said.

Investigators Monday morning were unable to determine a cause, Chapman said.

It was the second fire in the Gold Hill area in three days. On Friday, a couple in their 70s lost their home and all their belongings in the 6400 block of Kentucky Drive from a fire started by sparks from a woodstove. Neither was injured.