Lava Tubes doesn't untap during your untap step if it has a depletion counter on it. At the beginning of your upkeep, remove a depletion counter from Lava Tubes. {T}: Add {B} or {R}. Put a depletion counter on Lava Tubes.
Near Mint - $0.95
Lightly Played - $0.90
Moderately Played - $0.71
Heavily Played - $0.57
Damaged - $0.38
Near Mint Non-English - $0.95
Lightly Played Non-English - $0.90
Moderately Played Non-English - $0.71
Heavily Played Non-English - $0.57
Damaged Non-English - $0.38