Krana Yo-Kal were one of the eight types of Krana-Kal. They allowed their Bohrok-Kal to sense stress points in the earth, making for more efficient tunneling for its Bohrok-Kal. It could also sense underground movement.[1, 2] Its power was sense weakness.
The Yo-Kal could sense stress points in the earth, allowing it to tunnel through areas of least resistance. It could also sense any underground movement.