I created the cave and corridor in Blender. First, I modeled a basic sphere and then used Sculpt Mode to sculpt the rock textures. Finally, I combined the cave and corridor assets to build the environment.
Problem and solution
First, I created this cave using Blender.
For the modeling process, I started by creating a sphere, then used Sculpt Mode to shape it and add textures to make it look like a realistic cave.
After that, I exported the model from Blender to UE5, but I encountered a new problem. In UE5, even if an object is three-dimensional, the inner faces are not rendered properly, so the surface appears transparent from the inside.
I tried reading various references to solve this issue, but I could not find a clear solution. Therefore, I went back to Blender and used the Solidify modifier to add physical thickness to the mesh. After applying the modifier and exporting the model again, the surface was no longer transparent.
Through this problem, I realized that it is important to give objects proper thickness when creating 3D models.
References