Does anyone know what the difference is between the National Geographic Adventure and Traveler magazines?

I am looking to give one of these as a gift but I gave one of them last year as a gift and was told that all of the places they advertise are in other countries (other then Mexico or the US) and they were pretty much just full of ads. I can't remember which of the two it was though.

I'd be giving them to my mom and grandfather who like to hike and rock and fossil and arowhead hunt. Which would be best for them? My grandfather retired in Mexico and my mom in Arizona but they travel the lower states and Mexico often. I'd like to find something with just the Untied States and Mexico featured if possible.

Suggestions for other good magazines are appreciated. I am already considering Arizona Highways but are there other good ones for their specific hobby?

http://www.nationalgeographic.com/advent...

The National Geographic Traveler seems to meet the needs of your parents.
the Traveler looks like it has more ads.
Good Luck, juju