Final answer:
Machu Picchu was constructed without using mortar, using the ashlar construction technique. The walls have remained intact due to the precise fitting of the stones. The construction showcases the advanced architectural skills of the Incas.
Step-by-step explanation:
Machu Picchu was indeed created without using mortar, which is a type of adhesive material used to bind bricks or stones together. Instead, the Incas used a technique called "ashlar construction," where irregularly shaped stones are carefully cut and fit together without mortar. The precision of the Inca stonework is remarkable, with stones tightly fitting into each other like puzzle pieces.
This construction technique allowed the Incas to create incredibly durable structures that have withstood the test of time. For example, the walls of Machu Picchu have remained intact despite earthquakes and other natural disasters.
Furthermore, the stones used in Machu Picchu were often brought from distant quarries, requiring intricate engineering and transportation methods. This archaeological marvel showcases the advanced architectural skills of the Inca civilization.
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