National Geographic : 1959 Jun
NATIUNALGEOGRAPHICSOCIETY Torches Light the Way to Stygian Gloom in the Thurston Lava Tube This hard outer casing of a once-molten flood attracts sightseers at the Twin Craters. They walk only 400 feet of the tube's 1,200-foot length, emerging through a hole in the roof. Tree ferns and blossomy fuchsia, growing on lava, frame the entrance. Lacy tree ferns overhang a road on Kilauea. Taller ohias shade the I growth, where trade winds dump some 100 inches of rain a year. Hawaiians cooked the fern's starchy pith in steam crevices and fed i 812 uxuriant under In former days t to their pigs.