I went to Lost Valley trail in search of some geocache and on beautiful day. I managed to find three out of the four I was hoping to find. Along the way my GPS began to act weird and lose reception. While I knew exactly where I was it was a sobering reminder that reliance on technology is not always a good idea. Had I been in an area that I did not know and not been paying attention to the way I came to the current location, I could have easily ended up lost. Always carry spare batteries and keep a good mental map of your surrounds. It never hurts to sketch a rough map as you go on your own adventure.