I mean, on the contrary, to block up that opening, to seal it hermetically, and, if it is necessary, to completely hide the entrance by making a dam, and thus causing the water of the lake to rise."
Yo, por el contrario, quiero obstruir esa entrada en su mismo orificio, taparla herméticamente, y, si es preciso, disimularla por completo elevando por medio de un dique las aguas del lago.