و آر ایل:https://c8.alamy.com/comp/PYTGWG/heerenveen-the-netherlands-december-9-2016-spectators-in-newly-renovated-thialf-ice-stadium-during-international-isu-world-cup-speed-skating-cont-PYTGWG.jpg
و آر ایل:https://www.alamy.com/stock-photo/isu-world-cup-speed-skating-heerenveen.html
