Researchers from the University of Houston and the National Center for Airborne Laser Mapping (NCALM) flew over the Mosquitia region in a small plane shooting billions of laser pulses at the ground to create a 3D digital map of the topology beneath the jungle canopy.
Compiling their data, the analysts revealed what appears to be man-made elevation changes that are thought to show a forgotten city plaza dotted with pyramids reclaimed by the jungle.
The University of Houston and National Center for Airborne Laser Mapping team produced this 3D digital topological map which when examined shows a man-made plaza ringed in red
Inspired by this legend, cinematographer and Ciudad Blanca enthusiast Steven Elkins sought backing from private investors to pay for the team at NCLAM to use their laser mapping technology to chart the forest floor of Mosquitia.
Over the course of a week, the NCALM and University of Houston engineers flew over 60 square miles of forest in their dual-engine Cessna planes.
And at the end of each day, the data was transferred to Bill Carter, a University of Houston engineer who works with the NCLAM.
The Mosquitia region of the Honduran jungle mapped by the University of Houston and NCALM team
'I'm the only person right now on the planet that knows that there's these ruins,' said Carter as he recalled his thoughts when he saw straight lines and right angles on the 3D digital map.
'My wife walked in and looked over my shoulder and she was the second person to know.'
This was one of the first times that laser mapping, specifically light detection and ranging (LiDAR) had been used to locate ancient ruins.
One of the Optech Gemini laser pulse detectors which helped to map the topology of the dense jungle of Honduras' Mosquitia region
Dr. William Carter who interpreted the data from the LiDAR devices used by the NCALM and the University of Houston
The University of Houston and the NCALM team blanketed the Mosquitia rainforest with as many as 25-50 laser pulses every square metre that totaled up as more than four billion shots during the entire project.
Like a high-tech version of sonar, the light beams hit the ground and return to the aircraft and the time taken allows researchers to create 3D digital map of the surrounding topology.
Able to differentiate between differences in height of less than four inches, the University of Houston has worked with the NCALM to develop their LiDAR systems.
Ciudad Blanca has played a central role in Central American mythology.
Text's cite it as the birthplace of the Aztec god Quetzalcoatl and previous reported sightings over the years have described golden idols and elaborately carved white stones, leading to the lost city's name.
However, no confirmation of the existence of the city has ever been provided.
If confirmed, the discovery of Ciudad Blanca would be comparable to the popularisation of forgotten sites such as Machu Picchu, which lay ruined for hundreds of years until reintroduced to western eyes in 1911 by American historian Hiram Bingham.
Machu Picchu was known locally as a significant archaeological site but it was not until 1911 that it was rediscovered for western tourism
While the news of the encouraging results this week were greeted favourably by Honduran President Porfirio Lobo, archaeologists will now have to undertake a trek through the dense forest to visit the site in person.
Myth: The legend of El Dorado and the 'Lost City of Gold' has obsessed historians and explorers for almost five hundred years