Certainty mine

Group of 4 on south facing slope. One crossed slope to get to trees on other side of slope and started avalanche which slid about 800 m from a 30 cm crown snow on hard wind crust. 2 Skied the chute where it had slid and 2 went around. Halfway down, one moved to trees where it had not slid and start another that took him down, through trees for about 100 m. Not burried and no major injuries sustained