Google Doodle honors Sơn Đoòng Cave
Today's Google Doodle (April 14) celebrates Sơn Đoòng Cave in Vietnam.According to Google Doodle, the massive Sơn Đoòng Cave, hidden within the forests of Phong Nha-Kẻ Bàng National Park, a ...
Tag: the longest cave in the world
