Osan-ri Prehistory Museum

Up to five photos per place, one per member. A net score of −5 or below hides a photo. On each month’s first day, photos uploaded before that month are ranked and the top three remain. Ties use likes, then earlier uploads. Earned points remain after removal.

React to photos without signing in. A browser cookie allows one reaction per photo. Select the same reaction again to undo it.

Original photo GPS is compared with the place point within 250 m, or 500 m for large areas. Missing or mismatched GPS requires review. GPS agreement alone cannot prove where a photo was taken.