LEVERETT - Rescuers have freed a 25-year-old woman from the Leverett cave where she had been trapped since early afternoon on Monday, according to emergency personnel.

The woman was exploring the cave with family members when she became stuck, said Amherst Fire Chief Timothy Nelson. Amherst and Leverett firefighters and Leverett police were on the scene helping to free the woman, who was stuck in the cave for about 12 hours. She was unidentified and uninjured when freed at 1:10 a.m.

The woman was planning to slide down into a cave "and she slid down too far," said Nelson. Rescue crews handed down tools to the woman so she could try to free herself.

The rescue efforts had continued late into the night Monday after she became trapped in a cave off Rattlesnake Gutter Road, a 2-mile stretch that runs through a deep glacial ravine.

The woman was believed to be caving or spelunking with family members in the area.

Firefighters on a tactical rescue team worked into the night attempting to free the woman, who remained trapped 30 feet down in the lower chamber of a cave.

"She's wedged in fairly tight," Amherst Fire Chief Timothy Nelson said, describing the scene Monday night. "They're going to be there until they get her out."

Crews from Franklin and Hampshire counties assisted in the rescue.

Emergency workers Monday had sought specialized chiseling equipment to get her out of a "pinch point," Nelson said. Massachusetts Department of Transportation workers also brought demolition hammers to aid in the rescue.

Amherst Assistant Fire Chief Michael Zlogar supervised the tactical rescue team's operation at the scene. Leverett police and firefighters also responded and a relief crew was called in from Greenfield, Nelson said.

As they tried to free the woman, rescue workers also endured quick-moving thunderstorms that rolled through the region, which caused slippery conditions.