Ollantaytambo is an excellent site in the Sacred Valley of the Incas, here all kinds of vitrified and moulded stones can be observed.
A big piece of rock in the morning light, the perfect light to observe the reflection, the stone is very smooth at those parts.
The famous perfect fit, there is refection, smooth parts and a different colour to be observed, especially at the borders.
Here the same, a strong reflection on the borders of the stones in the perfect fitting wal
A same kind of stone as the first one, this one with a T-Groove, also that part is vitrified.