Talk:Sonic Deterrent/@comment-28483702-20171211081049/@comment-32403249-20180205045746

The Precursors didn't plan for it. They knew that a Sea Dragon Leviathan would be in the lava lakes, but the thermal plant is protected by a solid stone structure, and they likely doubted the possibility of a Sea Dragon venturing out past its comfort zone.

They probably should've remembered that when they took its egg.