There is no ice wall, and Antarctica gets a regular flow of visitors. About 74,000 people visited the continent during the 2019-2020 season, according to the Secretariat of the Antarctic Treaty .

Ice shelves form when a land-based ice sheet flows out over the ocean, forming a floating structure, USA TODAY previously reported. Ice shelves cover about 75% of the Antarctic coas tline .

A cross section of the ice wall, or Land-side Impermeable Wall, as it is officially known (Image: Tepco) Tepco said it will measure the success of the wall in contolling water flows by checking the ...