What is the meaning of “anchoring earth” and “earth cave”?

Explanation

“Anchoring earth” refers to the roots of the tree that lie inside the earth and play the role of an anchor for the tree to grow. They ensure the security of the tree as they nourish it with water and nutrients. “Earth cave” refers to the ground on which the foundation of the tree is laid as it holds the roots and keeps the tree standing tall and protects it from adversities such as heavy rainfall or storm.