You were close! It’s Riham Toulan: ://www.rihamtolan/ There is the blog he specifically mentions.
Ouch. I admit that by no means do we catch everything, but we aren’t purposefully ignoring anyone. If you had a question you felt needed Epic to respond to, but was ignored, you can contact me directly via PM even. I’m always on Monday-Friday 9-5 EST.
I’m getting someone from Samples/Content Team to explain the cave situation and I’ll get back to you on that shortly.
EDIT: It is in the map, but the map is 100 square miles and the cave is surprisingly small by comparison. The cave assets are specifically in the sub-level “Cave_Interior”. If you have it all loaded up, you can search your World Outliner for “PostProcessing_Cave” select that asset, then press ‘F’ to focus the camera to it. I hope that helps!