Talk:Soul of Night/@comment-86.38.205.9-20120804110534/@comment-433010-20120827072156

It begins to spread in Hard Mode. It starts from the chasms made from Ebonstone (and a giant V of Corruption/Hallow under your spawn point). If you smash a Demon Altar, additional blocks of Ebonstone/Pearlstone may be placed underground. Are you sure you have defeated the Wall of Flesh?