Drone photo taken on Jan. 3, 2018, shows Olympic Park in Gangneung, South Korea, containing ice sports venues for the Pyeongchang Olympics, including the Gangneung Ice Arena (front). (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

Photo taken Oct. 30, 2017 shows Gangneung Ice Arena in Gangneung, South Korea. The facility will be used for figure skating and short track speed skating in the Pyeongchang Winter Olympics in February 2018. (Kyodo) ==Kyodo

Photo taken Oct. 30, 2017 shows Gangneung Ice Arena (L) and Gangneung Oval (back) in Gangneung, South Korea. The arena will be used for figure skating and short track speed skating while the other building will be used for speed skating in the Pyeongchang Winter Olympics in February 2018. (Kyodo) ==Kyodo

Gangneung Ice Arena, Oct 30, 2017 : Gangneung Ice Arena in Gangneung Olympic Park of the 2018 PyeongChang Winter Olympics is seen in Gangneung, east of Seoul, South Korea. The 23rd Winter Olympics will be held for 17 days from February 9 - 25, 2018. The opening and closing ceremonies and most snow sports will take place in PyeongChang county. Jeongseon county will host Alpine speed events and ice sports will be held in the coast city of Gangneung. (Photo by Lee Jae-Won/AFLO) (SOUTH KOREA)

Gangneung Ice Arena, Oct 30, 2017 : Gangneung Ice Arena in Gangneung Olympic Park of the 2018 PyeongChang Winter Olympics is seen in Gangneung, east of Seoul, South Korea. The 23rd Winter Olympics will be held for 17 days from February 9 - 25, 2018. The opening and closing ceremonies and most snow sports will take place in PyeongChang county. Jeongseon county will host Alpine speed events and ice sports will be held in the coast city of Gangneung. (Photo by Lee Jae-Won/AFLO) (SOUTH KOREA)

This Oct. 30, 2017, photo shows Gangneung Ice Arena 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 Ice Arena, FEBRUARY 18, 2016 : in Gangneung, South Korea. (Photo by YUTAKA/AFLO SPORT)

General view of Gangneung Ice Arena, FEBRUARY 18, 2016 : in Gangneung, South Korea. (Photo by YUTAKA/AFLO SPORT)

General view of Gangneung Ice Arena, FEBRUARY 18, 2016 : in Gangneung, South Korea. (Photo by YUTAKA/AFLO SPORT)

General view of Gangneung Ice Arena, FEBRUARY 18, 2016 : in Gangneung, South Korea. (Photo by YUTAKA/AFLO SPORT)

General view of Gangneung Ice Arena, FEBRUARY 18, 2016 : in Gangneung, South Korea. (Photo by YUTAKA/AFLO SPORT)

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

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

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

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

The rink in the Gangneung Ice Arena is seen at the Gangneung Olympic Park in Gangneung, South Korea, Thursday, Feb. 9, 2017. The opening ceremony for the 2018 Pyeongchang Olympic Winter Games will be held on Feb. 9, 2018. (AP Photo/Ahn Young-joon)