Motorcycling in Mexico. These are dual-sport bikes which are legal for road use in the US. Most dual-sports are acceptable for mild to moderate trail use while being fully capable of travel on the interstate highways. On the other hand, an enduro bike is much more suited to this terrain, while not being at all suitable for the interstates, nor street legal in the US. They ARE street legal in Mexico, though.
I have an old Honda XR500R that would be perfect for this kind of riding. In fact, that's exactly what I use it for.