Dry stone from the arable or cultural land. They serve both as cattle/sheep fences and the lot's borders. Sometimes also the dry stone terracing is apparent, often combined with parts of stone masonry (house foundations and shed walls) that are held together by a clay-cum-needles "composite" mortar. In Peru in the 15th century AD, the Inca made use of otherwise unusable slopes by building dry stone walls to create terraces. They also employed this mode of construction for freestanding walls. Their ashlar type construction in Machu Picchu uses the classic Inca architectural style of polished dry-stone walls of regular shape. The Incas
Tad, The Lost Explorer Sara and Tad escape their clutches. Arriving in Machu Picchu, they discover that Professor Lavrof was kidnapped by Odysseus. After a series of adventures, they find Lavrov and Max Morden (voiced by Adam James), a famous archaeologist and Sara's fiance. After cracking the code of a wall map. Kopponen searches the desert with Lavrov and Mordon to find the treasure of the Incas. But Tad and Sara have the real map, and they depart for the jungle. Kopponen discovers them and finds the underground temple. After more adventures, it is revealed that Max is in league with Odysseus. After a