The Merced River flows through it all, fed by creeks hidden in hanging valleys.
Zion, in Utah, vies for the top spot in my personal hierarchy of US national parks (the other contender is Redwood — see below).
While visiting Zion National Park, try to make the two-hour drive to Bryce.
My short, mile-round route took me near to Delicate Arch, the most striking arch in the park.
A four- to five-hour drive north of San Francisco, the world’s tallest trees grow in this park, rising to over 100 m (328 ft).
It may sound hackneyed, but I don’t think any photographs of the Grand Canyon can do it justice.
It’s the driest, hottest and lowest national park in the USA, a seemingly barren basin of desert, canyons, salt flats and sand dunes.