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    Daily · Vast Horizons and Formidable Frontiers

    360° scene from Hoover Dam Concrete Pouring1324 AD – 1933 AD

    From the desolate expanse of the Kazakh steppe to the muddy mouth of the Río de la Plata, today's scenes highlight humanity striving to leave a mark on imposing natural environments.

    HistoryGuesser Daily5 locations30 plays1324 AD – 1933 AD
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    1. Round 1 · 1933 AD

      Casual

      Hoover Dam Concrete Pouring

      To cool the millions of tons of concrete and prevent the dam from taking over a century to cure, engineers embedded a network of pipes circulating ice water throughout the rising blocks.

    2. Round 2 · 1881 AD

      Casual

      First Trains on the Darjeeling Railway

      Nicknamed the 'Toy Train', this marvel of narrow-gauge engineering relies on a series of daring loops and zig-zags to ascend the steep Himalayas without the use of a rack system.

    3. Round 3 · 1495 AD

      Casual

      Da Vinci Painting The Last Supper

      Leonardo da Vinci experimented with applying tempera directly to a dry wall rather than wet plaster, a decision that caused the masterpiece to begin deteriorating within his own lifetime.

    4. Round 4 · 1450 AD

      Expert

      Inca Pilgrims at Isla del Sol

      Revered as the birthplace of the sun god Inti and the first Inca king, this rocky island was heavily terraced and built up as a major destination for religious pilgrimage.

    5. Round 5 · 1324 AD

      Expert

      Mansa Musa's Caravan Departs for Mecca

      The Emperor of Mali embarked on a pilgrimage accompanied by tens of thousands of subjects and so much gold that his spending in Cairo temporarily crashed the regional economy.

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