Just stumbled on this news article, "Death by GPS" in desert.

The article specifically talks about motorists in Death Valley who get stranded by following their GPS directions even though those roads are closed or impassable, but more broadly, the article is a good reminder to:

1. Be prepared, especially when venturing outside your normal locales or conditions
2. Don't blindly rely on one single tool/technology
3. Use your head/common sense