At this rotary intersection, one of the largest blocks of the Kambara debris avalanche may be examined. It is 30 m long and 3 m high, and appears to lie on the ground sticking out of the thin (1-2 m thick) finer deposit. It has a glassy skin due to quenching, with fine joints growing perpendicular to the surface. Internal expansion produced open cracks on the surface of the blocks which are similar to those on breadcrust bombs. The block was plastically deformed as a whole sensing gravity.

A Kambara block