July 1998, downtown Miami, Florida. Six apartment blocks have just been demolished, to allow the construction of two brand new 40-story skyscrapers. As construction workers prepare the site, they notice a strange phenomenon in the ground - a perfectly preserved circle of large holes, almost 13 meters across. What they had stumbled upon would generate huge excitement and controversy: either they had unearthed a rare and mysterious 2,000 year old Indian site - or a 1950s septic tank? ?or an ancient inverted American Stonehenge? or a unique Mayan village in North America. For a while theories ranged far and wide. But finally, after examining the strategically-placed holes, and the range of artifacts found around the circle - stone tools, shark bones, axe heads - archaeologists began to believe that this was a genuinely unique site - the remains of a mysterious forgotten tribe called the Tequesta.
Season 37 Episode 3 of Horizon resulted in a 0.00 rating in the 18-49 demographic.
Horizon is BBC Two's flagship 50-minute science documentary series.
Recognised as the world leader in its field, it regularly wins a sweep of international science, medical and environmental film accolades, and has recently won the Royal Television Society Award and the Prix Italia.
In 2002, the British Academy of Film & Television Arts presented Horizon with the BAFTA Television Award for Best Factual Series or Strand.
In 2003 it won the prestigious Images et Science award for best medical documentary and the Carl von Linne Award at the Living Europe film festival in Sweden. That year, a Horizon co-production with WGBH Boston won the Emmy for best documentary.
In September 2014 it celebrated its 50th anniversary and it continues to enjoy outstanding critical acclaim.