Related Clues:

• What the computer does with H.R.H. when he's not at home, by the sound of it
• Get over what's under
• Bound to clear the Underground
• Place for gold to be stored
• Clear - cellar
• Spring - clear - cellar
• Underground chamber - jump!
• Burial chamber - jump across
• Leap - arched ceiling
• Arched ceiling
• Burial area
• Leap (over)
• Place for jewels
• Cellar-bound
• Pole follower?