It was in the year 1986 a group of archaeologists discovered a claw of a bird while digging down in a cave in New Zealand. The flesh and muscles are still attached to it. Later, the archaeologist confirmed that it is a foot of extinct wingless bird moawhich disappeared from Earth 2000 years before.
The wingless mao was a heavy bird which measure up to 12 feet in height and upto 250 kg in weight. Maos got hunted to extinction by early humans. The nasty claws of moa kept in natural history museum of New Zealand.
Sacsayuman is an ancient walled complex located in Machu Picchu, Peru. The contruction of this complex structure was started in 1440 by emperor Pachacuti. It took more than 100 years for the completion of this structure. The wall is made up of many different types of rocks including diorite blocks, yucay limestones and dark andesite.