Dalles n. pl. A rapid, esp. one where the channel is narrowed between rock walls. (Northwestern U. S. & Canada) "The place below, where the compressed river wound like a silver thread among the flat black rocks, was the far-famed Dalles of the Columbia."
... Camp (military) Cape Dalles Desert Falls Fort Isle Lake Mount Oasis Pass Peak Point Port Sea ... — Capitals - A Primer of Information about Capitalization with some - Practical Typographic Hints as to the Use of Capitals • Frederick W. Hamilton
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