Sentences with phrase «other volcanic stones»

After planting in our minds the arresting image of skeletons floating on rafts of pumice, for instance, he pauses for a lecture on the many uses of pumice and other volcanic stones.

Not exact matches

Other ancient mariners, he discovered, had ventured into stormier waters to the north: Some 21,000 years ago, people had paddled boats across 30 miles of choppy water from Honshu to Kozushima Island to fetch shiny black obsidian, a type of volcanic glass, for stone tools.

The temazcal ritual usually involves spending five hours in a very hot tent or stone hut while a shaman or other religious practitioner uses scorching volcanic rocks doused with healing waters to bring the temperature inside above 170 degrees.