Última Esperanza Sound (Spanish: Seno Última Esperanza, ‘Last Hope Sound’) is an inlet stretching from the mouth of Eberhard Fjord to the outskirts of Monte Balmaceda, within the Magallanes Basin. The navigator Juan Ladrillero named it so in 1557, because he felt it was this direction was his last chance to reach the Strait of Magellan. However, he would reach a dead end at a glacier.