Related Clues:

• Place to hibernate
• Knuckle under
• Throw in the towel
• Kind of art
• Forty Thieves' hideout
• Cry uncle
• Rubbles' home
• Niagara's --- of the Winds
• Natural hideout
• Early artist's milieu
• Underground chamber
• Bat home
• Stalactite site
• Say uncle
• Where bats 'hang out'