Layers present in the Tetrahedron

Dug a couple of pits. Reactive layer about 6 inches down, 1st and 3rd wrist taps. Failed 24-30 inches down on tap 17, slid on 2-3mm graupel. Other group reported seeing natural releases of the 6 inch layer. We experienced no instability while skiing. It warmed significantly on Dec 29 with tree bombs dropping everywhere during our ride out.