Cruthaich dreach nas iom-fhillte den abairt seo Chaidh Dam Echo Canyon, a tha a'toirt a-steach Tasglann Echo Canyon, a thogail ann an 1969 - 70.
Gu dearbh, is e dreach nas iom-fhillte den abairt " Chaidh Dam Echo Canyon a thogail ann an 1969 - 70, agus is e am dam as fhaide sìos an abhainn air Meadow Valley Wash. "