The Strait of Ruination, or Strait of [[Erstarel]], is the strait at the narrowest part of the [[Sea of the Sisters]], marking the boundary between the Sea of the Sisters and the [[Ovgenian Sea]]. The shortest distance across the strait is approximately 240 kilometres, and is scattered with smaller isles whose borders are disputed between the [[Aspectdom of Ovgena]] and the [[Imperial Republic of Ovgena]].