Crimson Altar

Crimson Altars are naturally-occurring crafting stations that is a replacement for the Demon Altar in a world where The Crimson biome replaces The Corruption.It can be used to craft the Bloody Spine and other boss-summoning items. It is found mainly in and around cave systems in The Crimson but sometimes they can be found outside or near the crimson. They cannot be freed, picked up, placed, or crafted.