Boucher Trail Photo #55 • PaleoRob • 2010-10-23 • HikeArizona.COM

Bright Angel Shale above Hermit Camp, with the Geiger counter reading .33 uSv/hr. Approximately equivalent to .07 x the radiation dose Finland received during the Chernobyl disaster.

Boucher Trail, AZ

PaleoRob

Oct 23 2010

1/30s 14mm

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