In September of 1540, Captain Garcia Lopez de Cardenas, exploring at the orders of conquistador Francisco Vázquez de Coronado, arrived at the south rim of the Grand Canyon with a small group of Spanish soldiers and their Hopi guides. It would be a couple of hundred years before any other Europeans came to explore.
Note that the Grand Canyon has long been known to Native Americans, and there is clear evidence that they had settled in the area some 10,000 years ago.
A link to the Wikipedia article on the Grand Canyon is provided.
he discovered the Grand Canyon
Coronado
The Grand Canyon was made a natural monument when the settlers discovered it, which was in 1884.
The Grand Canyon
He discovered the grand canyon
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The Native American population first discovered the Grand Canyon. The first outsiders to discover it were the Spanish.
Coronado himself never saw The Canyon, but one of his captains, Garcia Lopez de Cardenaz, was led there by a group of Hopis.
He discovered the Grand canyon and the Colorado River
He discovered the Grand Canyon.
Francisco Coranado