Laser technology was used to survey digitally beneath the forest canopy, revealing houses, palaces, elevated highways, and defensive fortifications.
Many structures are thought to be stone platforms used for pole-and-thatch homes.
The project's discoveries will feature in a Channel 4 programme called Lost Cities of the Maya: Revealed, airing in the UK on Sunday 11 February at GMT. Later they moved north into Middle-Eastern Northern Europe.
You can also edit the file's last line to one of genomewide/bychr/byseg/target to calculate the admixture percentages for the whole genome, by chromosome, by segment or target region respectively.
Do note that the last three will have larger noise.
UPDATE: I should also point out that this DIY calculator will work better for those individuals whose genetic variation was included in computing the admixture model.
Those belonging to a group not included at all in the set of samples I used might get somewhat odd results.