Topic: Deep Carbon Observatory on roll20
"Once, long ago there was a Kingdom of unspeakable wealth that traded in dark wonders, secrets and death. And many of the strange things that are now on earth were theirs. They drew their power and magic from a place, and guarded it fiercely against all. Then, out of spite (somehow) as their Kingdom slowly died, they hid their treasure palace in a lake, and set there: sleepless and indestructible guards. Everyone knows where it is, on the Lock, upriver of Carrowmore. No-one who goes there ever comes back."
https://www.youtube.com/watch?v=icVt30uiagw&t=3s
This is a (1st ed) AD&D game with some options available from other games that will eventually morph into a Lamentations of the Flame Princess game.
Here is the link to join:
https://app.roll20.net/join/2183609/itdqGA
Although this is technically not LoFP, it is very much influenced by it.