Stone arcs

I think there should be naturally spawned stone arcs, these arcs spawn in ocean biomes (and maybe in mesa biomes made of red sand blocks). These natural master pieces range at a height of 15 to 40 blocks and a width of 30 to 50 blocks. Not only that, but maybe some of them could have lush cave blocks like moss, azalea bushes, and glow berries. I think these majestic arcs would be a majestic addition to this blocky building game.