National Park Service researchers, from left, Tommy Atella, Naomi Oberg and Andy Hubbard survey a spring-fed pool that has run dry in Saguaro National Park on Oct. 17, 2023.

Take care when exploring as the rocky spaces can be slippery. Hours The Cabrillo National Monument is open to the public every day (barring certain holidays) from 9 a.m. to 5 p.m. Tickets ...

UNESCO World Heritage CentreFor over 2,000 years, Pueblo peoples occupied a vast region of the south-western United States. Chaco Canyon, a major centre of ancestral Pueblo culture between 850 and ...