Hi Experts! This is the Jungle Cave (40x35), a leafy and lush cave where you'll probably come across quite a few small dinosaurs if you're traveling across Chult, or maybe just one big one. Otherwise I'd suggest some Shambling Mounds or maybe a young green or black dragon, if you're feeling spicey!
Your alternate versions here and Blighted and Haunted, 2 versions with a more subdued tone than the original. The Haunted one I made to cover multiple bases, being a bit foggier and shadowy than the original while feeling more rain forest-y at the same time, at least to me. I think it's a nicely versatile one that'll give you more opportunities to use it. The Blighted one felt like an interesting direction to take it in, with all the dead or dying plants giving the impression of a sick or poisoned forest. Surely your players can find the source of this blight?