It's easy to determine that Crater Lake is not the deepest lake in North America when you focus on maximum depth. But what happens when you compare lakes by "average" depth?

How would you describe Arches National Park to someone who had never been to the Southwest? You could try to explain the landscape by comparing it to the old Flintstones cartoons, but what if they weren't familiar with the Flintstones? Do you think they'd believe you if you said Arches was a cathedral of rocks, where gravity doesn't always work, where the sunsets stain the cliffs?

Students are back in school, the weather is turning, the leaves have mostly fallen. Also falling are the costs of booking a room in national park lodges for the next few months.

A tribute to Teddy Roosevelt, Theodore Roosevelt National Park sprawls across the same North Dakota landscape where the nation's 26th president established his Maltese Cross Ranch in 1883. Today the park marks its 29th birthday.