Where did Hernando de Alarcon explore?

Hernando de Alarcón explored the southwestern region of North America, primarily focusing on the Colorado River. In 1540, he embarked on an expedition to find a route to the Pacific Ocean, following the river from present-day Mexico into what is now the United States. De Alarcón's journey contributed to the European understanding of the geography and indigenous cultures of the region. His exploration occurred during the broader context of Spanish colonization efforts in the Americas.