What kind of musical instrument is the "Ankoron"?

From the ornamentation of the Jade Wisp bronze drum and the Dongsan boot-shaped bronze axe, there is a person playing the sheng, and there are people sounding four bamboo pipes that seem to be musical instruments, or a wind instrument such as the reed-pipe and the "Anklung". "The anklung is a famous musical instrument of the modern West Javanese. "According to Raffles in his History of Java, the Dayaks of Kalimantan, when on safari, used to hold a bird festival to determine the direction of the safari; and when the safari party was advancing, the 'anklung' was sounded to guide the way. Lusheng is still prevalent in the ethnic minority areas of Southwest China, and is often played in conjunction with the elephant-footed drums during dances". It seems that some tribes in Indonesia already had these instruments.