This striped red rock is very common in Canyon Biomes.
A Stone Mining Cell is needed to mine this rock, and other types of Canyonstones as well.
Occasionally you can obtain a very small amount of Ruddy Canyonstone from Trogs, either when killing them or harvesting from them when they are Pets and have been fed.
Ruddy Canyonstone is required for crafting Ruddy Stucco Walls, and after that Patina Roofs, Patina Walls and Ruddy Stucco Windows that will be unlocked after crafting Ruddy Stucco Walls.
To unlock the recipe of Ruddy Stucco Wall, you will have to craft Stucco Wall at first, which can only be unlocked after mining caramel Canyonstone high up in Canyons.
Additionally to that, Ruddy Canyonstone can be used in several recipes that will accept different kinds of Canyonstones, like Wood Gravel Wall, Barred Wood Window, Cobblestone, Mossy Cobblestone, Blue Adobe Wall, Red Adobe Wall or Yellow Adobe Wall.
When Ruddy Canyonstones are placed into the game world just as they are, Dustevils can spawn on or near them during the day, more rarely Trogs or even Dried Leafis, sometimes yellow Pigsies or ordinary Leafies.
During the night, Night Pigsies as well as Night Leafies and rarely Night Chizzards might spawn on areas made of Ruddy Canystone.
Also Wood Treasure Chests might appear at night on this kind of block in completely dark areas, no matter where these blocks have been placed.