Around 2000 BC, the Ljubljana Marshes in the immediate vicinity of Ljubljana were settled by people living in pile dwellings. Prehistoric pile dwellings and the oldest wooden wheel in the world are among the most notable archeological findings from the marshland. These lake-dwelling people lived through hunting, fishing and primitive agriculture. To get around the marshes, they used dugout canoes made by cutting out the inside of tree trunks. Their archaeological remains, nowadays in the Municipality of Ig, have been designated a UNESCO World Heritage Site since June 2011, in the common nomination of six Alpine states.