1988 Peru Ollantaytambo Inca Wall

A road trip down the Urabamba Valley from Pisac town, ends in this fortress town which dominates the valley from a high vantage point. High at the top in the fortress, there were huge blocks of stone keyed together almost seamlessly. It leaves you wondering how the blocks of stone were manouvred into place and joined so closely hundress of feet above the valley bottom.