Close-up view of fish trap in flooded rice paddy field. Tana Toraja (Sulawesi Island, Indonesia)

The round things often seen in flooded rice fields are fish traps. Fish get in the round pool and get trapped there.

There is also a green square in the field that is a rice nursery, where rice sprouts are planted and grown before being transplanted in the flooded fields

See more information about the Toraja People in the Tana Toraja photo album.