By Graeme Murray & Amy Walters A British explorer has found a whole building buried under the ice in one of the most remote places on earth. Chris Brown recently hit the headlines after sharing his terrifying ordeal when travelling to Antarctica with his son, Mika, 28, as the pair got “trapped” in -28°C conditions after their plane broke down. The dad-of-two from Harrogate, North Yorkshire, often shares discoveries from his wild adventures and has gone viral this week with a video that has already attracted more than 20,000 views. The clip shared online (@chrisbrownexplores) has blown social m…