They are carved.
They have been carved out.
1. carving (countable noun) That room is full of carvings from the Pacific Islands.
2. carving (non-countable noun) Carving and using clay are not the same because you can add with clay.
3. carve (verb) Carve your name on a tree.
4. calves (noun plural of calf) The truck was carrying a mature beast and two calves.
5. carved (past participle) It is not carved in stone.