Talk:Shadow Orb/@comment-24070645-20131020121518/@comment-24013733-20131020123150

Chasms should always be visible from the surface, yes. If your world has red corrupt stone and grass instead of deep purple, you're looking for spherical-ish entryways. The entrance into the caverns of the Crimson can be covered up quite often, unfortunately. Look for a round-ish crimstone formation and dig around it till you find the entrance.