Abandoned railway tunnel scene

Hello everyone!
For this environment, I wanted to practice studying lights by creating this scene from a reference of a railway tunnel (the Glowworm Tunnel Helensburgh, Australia) on Unreal,
I used the 2k and 4k assets available on Megascans bridge, and I used the plugin for the multi material blend on unreal.
The floor is made from megascans multi material blend, with vertex paint to create all the relief (and puddles).
Vertex paint was also used on the rocks.
I learned a lot, it was very fun and interresting to do that scene !
Feel free to give me feedback, advice or constructive criticism :)

stay safe everyone