{"id":1540,"date":"2026-08-13T11:46:14","date_gmt":"2026-08-13T10:46:14","guid":{"rendered":"https:\/\/viasathistory.eu\/episode\/cities-of-the-underworld-s4e4-americas-secret-underground\/"},"modified":"2026-10-22T16:23:49","modified_gmt":"2026-10-22T15:23:49","slug":"cities-of-the-underworld-s4e4-americas-secret-underground","status":"publish","type":"vsei_episode","link":"https:\/\/viasathistory.eu\/pl\/episode\/cities-of-the-underworld-s4e4-americas-secret-underground\/","title":{"rendered":"Miasta podziemia \u2014 Sezon 4, odcinek 4 \u2014 Tajemnicze podziemia Ameryki"},"content":{"rendered":"<div class=\"vsei-meta\"><span><b>Seria:<\/b> <a href=\"https:\/\/viasathistory.eu\/pl\/programy\/miasta-swiata-podziemi\/\">Miasta podziemia<\/a><\/span><span><b>Sezon:<\/b> 4<\/span><span><b>Odcinek:<\/b> 4<\/span><span><b>Rok produkcji:<\/b> 2020<\/span><\/div>\n<h2>Streszczenie<\/h2>\n<p>Don bada \u015bci\u015ble tajne tunele wojskowe i rz\u0105dowe oraz przygl\u0105da si\u0119 tajnym technologiom, kt\u00f3re mog\u0142yby pos\u0142u\u017cy\u0107 do budowy ca\u0142ych miast tu\u017c pod naszymi stopami.<\/p>\n<h3>O serii<\/h3>\n<p>Don Wildman stara si\u0119 rzuci\u0107 nowe \u015bwiat\u0142o na najbardziej zagadkowe tajemnice naszej przesz\u0142o\u015bci i zag\u0142\u0119bia si\u0119 w nie, przemierzaj\u0105c najodleglejsze zak\u0105tki Ziemi i odwiedzaj\u0105c najstarsze miejsca w historii.<\/p>","protected":false},"excerpt":{"rendered":"<p>Series: Cities of the UnderworldSeason: 4Episode: 4Production year: 2020 Synopsis Don explores top-secret military and government tunnels and looks into classified technology that could be used to build entire cities right under our feet. About the series Don Wildman attempt to shine new light on the most vexing mysteries of our past and delves deep [&hellip;]<\/p>\n","protected":false},"featured_media":1533,"template":"","meta":[],"vsei_genre":[64,16,27,17],"class_list":["post-1540","vsei_episode","type-vsei_episode","status-publish","has-post-thumbnail","hentry","vsei_genre-adventure","vsei_genre-documentary","vsei_genre-expedition","vsei_genre-history"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"Series: Cities of the UnderworldSeason: 4Episode: 4Production year: 2020SynopsisDon explores top-secret military and government tunnels and looks into classified technology that could be used to build entire cities right under our feet.About the seriesDon Wildman attempt to shine new light on the most vexing mysteries of our past and delves deep as he journeys to\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/viasathistory.eu\/pl\/episode\/cities-of-the-underworld-s4e4-americas-secret-underground\/\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO Pro (AIOSEO) 5.0.4\" \/>\n\t\t<meta property=\"og:locale\" content=\"pl_PL\" \/>\n\t\t<meta property=\"og:site_name\" content=\"viasathistory.eu -\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Cities of the Underworld \u2014 S4E4 \u2014 America\u2019s Secret Underground - 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