Natural star shaped cave wonder

An image of a mountain landscape, featuring a cave entrance that is shaped exactly like the outline of a star. The cave should blend naturally into the rugged terrain of the mountain, with the entrance forming a clear and unmistakable star shape. This star shape should be simple and defined, without intricate details, emphasizing just the overall star outline. The surrounding environment should include pine trees and rocks, but these elements should not distract from the cave's star-shaped entrance. The lighting in the scene should enhance the visibility and distinctiveness of the star-shaped cave entrance.