Game mode: Private Multi-Player Server
Problem: Misc - Bizarre Sounds
MP server using Age of Calamitous mod.
I suddenly started hearing a very loud, crashing, booming sound with intermittent growling. I was on the beach on the far eastern edge of the jungle biome near the curse wall. I had just been swimming and came out of the water and placed a couple sandstone walls when it started.
I asked my clan mate, who was across the map somewhere else, if he could hear it. He could not, but when he spawned in by his bed at my location, then he could hear it. It got more frequent and neither of us could figure out where it was coming from or what it was.
He relogged to main screen and back and could still hear it. I logged out completely and then logged back in and then the sound stopped.
Several minutes later I had placed some sandstone foundation blocks in the water, then destroyed them. The sound suddenly started again. It seemed coincidence, but maybe not? It was still booming and growling when I logged off.
I recorded a short video of the sound. Freaky Sound!