A conservationist in Ukraine discovered an ancient cave complex with Viking carvings behind an abandoned house. Dmytro Perov, a conservationist at the Center for Urban Development in Kyiv, grew up hearing stories about an ancient cave somewhere on the estate of his great-great-grandmother and her family, he told Life Pravda in a Nov. 7 interview. Perov knew the location of the three-story manor — now a dilapidated, abandoned house — in central Kyiv. Perov decided to investigate, he told Live Pravda. He went with a few friends to try and find the cave. After searching for half a day, the...