FOSS gamedev and creative worlds

Here's a fun little thread idea i just had so totally not stolen from IRC.

A forum thread where you post pictures of rare NATURALLY GENERATED (this means no mods that affect it) oddities/awesomeness in the minetest world. Gravel biomes, nyan cats, natural mese blocks, etc.

You MUST have the position and seed either in the screenshot or in the post.

Let me start:

Another of those gravel biomes.
Seed: 2012
Coords: -40, 4, 120