Iago and Zupjok

Very nice powder on N facing slopes with ski pen if 30cms. Some solar crusts on exposed S aspects. Dug a pit at 1640m, NNE aspect on Iago, 30 degree slope CTH8 SP failure down 55cms. Whumphing heard but no shooting cracks. Skier trigger size 1 on convex roll with small crown but 75m propagation - windslab sliding on wind scoured surface.