Cave : 'X' shaped 'Y' series

A photorealistic image depicting the interior of a cave, shaped like a , with a view overlooking the outside. The perspective is from inside the cave, focusing on the opening that frames the outdoor scenery. The cave walls should have realistic textures, such as rock formations and perhaps some moss or lichen. The outside view visible through the opening should include a natural landscape, possibly with trees, a distant mountain, or a clear sky.