The Lava Tube/Pitch-Black Grotto is probably where the hole to Maka Wuhu is. The whole mountain was made out of stone so it appears to be man-made. The cave also leads into Silk Sands, another location on Wuhu Island. You can access this place in Island Flyover or the last stage of the Cycling Road Race.
Island Flyover Information
- Daytime: “What could have made this massive hole in the side of the volcano?”
- Evening: “Apparently, it wasn’t made by lava at all… It’s man-made!”
- Night: “Archaeologists think this tunnel was built by ancient inhabitants.”