Grand Canyon Supergroup — 1,250-650 million years. Vishnu basement rocks — 1,840-1,680 million years. Compared to these old, old rocks in its walls, Grand Canyon itself is a geologic youngster.

Grand Canyon keeps 80% of its visitor fees, Parrish said. A $208 million construction contract was awarded in 2023. Congress provided more than $70 million for the project but the bulk will come ...

There are lots of great Arizona national parks beyond the Grand Canyon. Here are the best national parks in Arizona plus tips ...

Everything you need to know about the 2025 XPEL Grand Prix at Road America. Find race, driver, track and team information, as well as news and results. Skip to Main Content. Fan Central . How to ...

ST. PETERSBURG, Fla. — It’s that time again! Racing fans from all over will be heading to the Bay area for the start of the next IndyCar season. The 2025 Firestone Grand Prix will be speeding ...