Photo taken in Gangneung on Jan. 3, 2018, shows Gangneung Oval, the speed skating venue for the 2018 Pyeongchang Olympics. (Kyodo) ==Kyodo

Photo taken in Gangneung on Jan. 3, 2018, shows Gangneung Oval, the speed skating venue for the 2018 Pyeongchang Olympics. (Kyodo) ==Kyodo

This picture taken on December 28, 2017 in Gangneung shows venues for the 2018 Pyeongchang Winter Olympics including Gangneung Ice Arena (L), Gangneung Oval (C) and Gangneung Hockey Centre (bottom R). Thousands of avid speed skating fans will pack the futuristic Gangneung Oval for the Olympic tournament next month. But afterwards one suggestion is for the cavernous steel-grey structure to host frozen fish. / AFP PHOTO / Yelim LEE

In this Monday, Oct. 30, 2017, photo, the sun reflects off the Gangneung Oval at Gangneung Olympic Park in Gangneung, South Korea. South Korea's sleepy skiing destination of Pyeongchang is finally looking like a Winter Olympics host city after more than a decade of work, two failed bids, and chapters of controversy over venue locations, construction delays and costs. (AP Photo/Ahn Young-joon)

General view of Gangneung Oval, FEBRUARY 19, 2016 : in Gangneung, South Korea. (Photo by YUTAKA/AFLO SPORT)

General view of Gangneung Oval, FEBRUARY 14, 2016 : in Gangneung, South Korea. (Photo by YUTAKA/AFLO SPORT)

General view of Gangneung Oval, FEBRUARY 14, 2016 : in Gangneung, South Korea. (Photo by YUTAKA/AFLO SPORT)

General view of Gangneung Oval, FEBRUARY 11, 2016 : in Gangneung, South Korea. (Photo by YUTAKA/AFLO SPORT)

General view of Gangneung Oval, FEBRUARY 11, 2016 : in Gangneung, South Korea. (Photo by YUTAKA/AFLO SPORT)

General view of Gangneung Oval, FEBRUARY 10, 2016 : in Gangneung, South Korea. (Photo by YUTAKA/AFLO SPORT)

General view of Gangneung Oval, FEBRUARY 10, 2016 : in Gangneung, South Korea. (Photo by YUTAKA/AFLO SPORT)