 When the samples were cleaned in preparation for analysis, a large amount of wood was extracted from the completely organic sample indicating that the fire had been quickly extinguished.The radiocarbon dates from caches in the fill around the shaft generally corroborate this date.One corrected date from Cache 21 was 1870 +/- 50 (Beta-82949) and a corrected AMS date from Cache 14 was 1950 +/- 50.