if one part was destroyed the other might be saved.

And one part of prudence they luckily used: they never trusted those three savages which they had taken prisoners with knowing anything of the plantation they had made in that valley, or of any cattle they had there, much less of the cave at that place, which they kept, in case of necessity, as a safe retreat; and thither they carried also the two barrels of powder which I had sent them at my coming away. They resolved, however, not to change their habitation; yet, as I had carefully covered it first with a wall or fortification, and then with a grove of trees, and as they were now fully convinced their safety consisted entirely in their being concealed, they set to work to cover and conceal the place yet more effectually than before.