The landslide struck the resort in the Racha region, known for its mineral water, on Thursday.
Drone footage of the landslide showed mud, tree trunks and other debris partly covering the lush green valley.
According to Georgian Prime Minister Irakli Garibashvili, dozens of people were still missing. The Interior Ministry said rescue operations were proceeding.
Reporting by Maxim Rodionov; Editing by Cynthia Osterman