Treaty of Ribe an impossible task of raising 100,000 silver marks to redeem his country. Denmark had effectively been dissolved and the country was left without a king between 1332 and 1340. In 1340, King Valdemar IV of Denmark began a more-than-twenty-year-long struggle to reclaim his father's kingdom. Although eventually succeeding in regaining control of Zealand, Funen, Jutland, and the Scanian lands, he failed to obtain control of Schleswig, whose ducal House of Estridsen managed to continue its virtual independence. To gain influence over the province, Valdemar married Helvig of Schleswig, the only daughter of Duke Eric II of Schleswig. In 1372, he
Falkland Islands and Dependencies Aerial Survey Expedition track. Falkland Islands and Dependencies Aerial Survey Expedition The Falkland Islands and Dependencies Aerial Survey Expedition (FIDASE) was an aerial survey of the Falkland Islands Dependencies and the Antarctic peninsula which took place in the 1955–56 and 1956–57 southern summers. Funded by the Colonial Office and organised by Peter Mott, the survey was carried out by Hunting Aerosurveys Ltd. It was based at Deception Island, using the "Oluf Sven", two Canso flying-boats and several helicopters. The photographic collection, held by the British Antarctic Survey as the United Kingdom Antarctic Mapping Centre, comprises about 12,800 frames taken on 26,700 kilometres of