I could possibly cause a cave-in with this, no?(Hakke Hazan Hogeki) – Eight Trigrams Crumbling Mountain Crusher
Description: Kuroha stands firm with his byakugan activated and begins to gather a large amount of chakra into his hand, condensing it and charges his target. He then open's his palm and strikes the target, releasing the chakra at a constant rate having it protrude from the target's back and expanding as it travels so that it becomes large enough to destroy a mountain.
Pros: Mountain busting.
Cons: Requires direct contact with a living organism? (or atleast something with a chakra network.
I'd imagine this isn't the best ability to use in a cave, huh?