G-313 Airport, designated with the ICAO code RK22, is a military airfield located near Hwacheon in Gangwon-do, South Korea. The facility operates under South Korean or U.S.-affiliated military jurisdiction, consistent with the RK prefix used for military airfields on the Korean Peninsula. Hwacheon is situated in a mountainous area close to the Demilitarized Zone (DMZ), and airfields in this region historically serve strategic defense and logistical purposes. The airport does not serve commercial passenger traffic and has no assigned IATA code.