Where to commonly find limestone/Sandstone

[Luff]

Lazy ♥♥♥♥ here, i'm confused as to where i'm going to find limestone and sandstone after that update. From what i've gathered, they've sprinkeled them to most biomes, but you can't really find them in large quantities there. Where would i find limestone/sandstone in large quantities, except for shallows caves?
Looking for specific answers. I'm aware it's not in the shallows, so don't worry about that.

[Lobo'ren]

What's wrong with the shallow caves? There should be plenty in them. And as for Sandstone I do believe you can find them in volcanic vents and Kelp Forests.

[Vane]

Originally posted by Lufroloc the Viking:

Lazy ♥♥♥♥ here, i'm confused as to where i'm going to find limestone and sandstone after that update. From what i've gathered, they've sprinkeled them to most biomes, but you can't really find them in large quantities there. Where would i find limestone/sandstone in large quantities, except for shallows caves?
Looking for specific answers. I'm aware it's not in the shallows, so don't worry about that.

Grassy plateau has the most sandstone in experimental mode.

[Tommyk]

I am lazy. I build scanner room, let it search for them and display them on my HUD

[Demolition414]

If you have a seaglde and an upgraded oxygen tank look around the safe shallows caves, threres a fair amounts of sandstone chunks in those, you need to look for little holes and gaps in cave walls. , the devs have hidden it, but there is a lot of it.