The last element of a trilogy exploring subterranean spaces that began with the 2015 “Aragane” and continued with the 2019 “Cenote,” Oda Kaori’s docudrama “Underground” ventures from a subway in Sapporo to caves (locally called “gama”) in Okinawa. It also marks a new direction for the director, whose previous trilogy entries were documentaries. “Underground” is […]