I must say I'm loving the game so far... But this limestone/chalk thing is ridiculous. Having fruitlessly searched for over 3 hours in real time last night and ended up empty handed, I thought I would load up a creative game and fly about....2 hours later and over 10k in each cardinal direction still nothing.. Such massive biomes but the underlying bedrock does not really change at all for what seems like a 4-8k tile radius. Something so intrinsically linked to game play and progression it seems a bit of a missed opportunity to not have an increased number of differing rock types in your strata to make things a bit more interesting and also achievable. Having enjoyed progression so far it seems a bit of a kick in the teeth that I'm probably gonna have to scrap my 30 hours of play so far and start a new world that has limestone as a starting biome.... *sigh*