Logbook entry: Recconaissance to Heroin Tower (2009-12-09) at Heroin Tower

About happenings on Dec. 9, 2009, wrote:

Reconnaissance trip to ice tower ridge. This cave was named based on the large quantity of needles. Bio samples were taken and a Tinytag was installed. Harry used the thermocouple probe to measure soil temperatures spaced out throughout the tower as well as at several depths beneath the Tinytag to give a gradient.

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