Landlocked by South Africa on all sides, the kingdom of Lesotho is a place of high skies, wide landscapes and narrow prospects for its two million inhabitants: a set of dimensions somehow captured in every exquisitely constructed, square-cut frame of “This Is Not a Burial, It’s a Resurrection.” A haunted, unsentimental paean to land and its physical containment of community and ancestry — all endangered by nominally progressive infrastructure — this arresting third feature from Lesotho-born