Lastochka spa is located in the northern part of the Primorye region (Russian Orient Rim) not far from the border with China in the southwestern part of the Ussuri River catchment. This spa is well known in the Russian Far East, and mineral water from the Lastochka spa is located in the northern part of the Primorye region (Russian Orient Rim) not far from the border with China in the southwestern part of the Ussuri River catchment. This spa is well known in the Russian Far East, and mineral water from the