If you like backcountry flying definitely check out his blog, great land scape photography, interesting stories and back country flying. Some familiar places such as saline valley and red creek:
http://www.mikayadigital.com/blog/author/michael-collier/
This is the page about his latest work an iPad app called the "Wonders of Geology", push the play button for a pretty sweet intro/video:
http://www.mikayadigital.com/wondersofgeology.html
FYI I'm not in anyway affiliated nor do I have a financial interest with these publications. Just passing on a great website and iPad app from a local pilot for all my fellow BCP'ers. Hope you enjoy it as much as I did.