After the success of last year’s solo trip to New Mexico, I wanted more. I debated a few options, consulting this map and looking for clusters of national parks that would allow me to spend 5-7 days in one or two places while hitting a handful of parks. Mostly, I wanted to go west again and Arizona’s national parks kept popping up in the books I was reading, the shows I was watching and it all started to seem like a sign.…