The ruins and terraces of Machu Picchu look amazingly mysterious and even more ancient shrouded in the pre-dawn fog, imagining that anything could be discovered just beyond your sight.
Go early. This is what the first hour looks like — the terraces and stone structures barely separated from the cloud forest that hid them for four centuries. The mist lifts fast, and this window closes. © McKay Savage from London, UK, CC BY 2.0, via Wikimedia Commons

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