Oniore Waterfall and Toba First Cave Natural Monuments (Georgian: ოჩხომურის ჩანჩქერის ბუნების ძეგლი) is a combination of waterfall and cave at 680 m above sea level in Martvili Municipality, Samegrelo-Zemo Svaneti region of Georgia.
The cave is produced in the limestone. The excavation measured 12m X 5 m is opened along the shaft. The underground waterfall is about 70 m from the cave entrance, where the height of the ceiling is 30 meters. The width of the tunnel is 12-15 m. The waterfall is about 67 m high.
