Notifications can be managed in browser preferences.
Swipe for next article
Early aerial photographs first highlighted the scale of Peru’s Monte Sierpe monument. Almost a century later, scientists have worked out what it might have been used for
I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice
One of the world’s most unique archaeological sites – a band of thousands of holes snaking their way over a mountainside in the Peruvian Andes – has long remained a mystery, with no clear indication of who made it or what it was originally used for.
