Did ancient people or giants create these giant sculptures, tombs, and shrines on Sardinia?

YouTube Video Here: https://www.youtube.com/embed/cbhv2_53Fvc?feature=oembed&enablejsapi=1 The Island of Sardinia, west of the Italian Peninsula in the Mediterranean Sea, holds many ancient secrets. Today, ancient astronaut theorists are most interested in the monumental tombs and other sites that seem to indicate a race of giants who used advanced technology. If not giants, it's still unexplainable using conventional historical timelines and conventional thinking. Evidence of giants includes the so-called "Giants of Mont'e Prama," 40-50 ancient stone sculptures created by the Nuragic civilization of Sardinia. Some of the 'giants' stood over nine feet tall and weighed over 800 pounds, carrying shields and masks. They are said to date before the 8th century BC, which if accurate, means they predate Greek sculptures as the oldest examples of Colossi (giant sculptures) ever found in the Mediterranean. Giants of Mont'e Prama via YouTube Megalithic researcher, and explorer, Hugh Newman, shared his video (see below) of these strange oversized sculptures found in Sardinian farmland in March 1974. A farmer made the find while plowing a field when he struck on the stones. Hundreds of thousands of fragments were carefully reassembled to reveal giants and small versions of megalithic towers called nuraghe. These towers gave the Nuragic civilization its name. Newman also discusses the newspaper account of an eight-foot skeleton unearthed on the island at Porto Torres, supposedly dating to 4,000 years ago. In the next video, he discusses giant-sized bones found by another farmer plowing a field. Newspaper account and giant tooth via YouTube Take a look at these bizarre robot-like sculptures from MegalithomaniaUK below. See the video from MegalithomaniaUK below: Next, Newman travels to the Giant Tombs, hundreds of collective tombs built by the Nuragic civilization all over the island during the Bronze Age. The largest tomb is called the Coddu Vecchiu and dates back to 2000 BC. A 100-foot tall carved 'entrance' rock that marks the trapezoidal burial chamber behind it. The entrance rock has a smaller semicircular doorway carved out at the base considered "a symbolic passageway for the spirits of the dead." The limestone and granite megalithic blocks are enormous, weighing tons and carefully assembled with some stones individually carved into curving shapes. Take a tour of the Giants' Tombs from MegalithomaniaUK below: YouTube Video Here: https://www.youtube.com/watch?v=9ypi4_7bpy0 In the third video, we take a look at the most impressive site of all, the sacred Well of Santa Cristina. The name is misleading, coming from the well's proximity to a country church dedicated to her in the 1200s. According to Atlas Obscura:

"The well is composed of an elliptical enclosure surrounding a trapezium-shaped opening in the ground, with stairs leading down to a circular, domed subterranean chamber that housed the spring. The Nuragic religion seems to have involved a lot of symbolic representations of fertility, and included a cult of water that invoked the various feminine aspects of the divine."

Inside the Giant Tombs and looking out from the Well of Santa Cristina (via YouTube) Walls inside the shrine appear laser-cut (via YouTube) A round opening in the ceiling allows sun and moonlight to shine down upon the spring, particularly at the equinoxes. Like stone monuments across the globe in Peru and Egypt, the stonework used here is precision-cut and has to be seen to be believed. Inside the shrine, the walls are perfectly smooth, curving, and in some cases use interlocking shapes.

What technology was used? We currently have no idea.

What happened at the shrine? There is no recorded history.

The opening to the shrine forms a perfect trapezium shape while aerial shots of the well show a curving formation, that brings to mind the Hindu Shiva-linga. While we still have no concrete proof that giants roamed Sardinia, these ancient monuments give us a sense of wonder. How did ancient people create these shrines using enormous boulders cut with near laser perfection? Why do similar finds appear all over Earth when global travel was supposedly impossible at that time? What technology was used? It all remains a mystery that defies traditional ways of thinking. See the Well of Santa Cristina from MegalithomaniaUK below: YouTube Video Here: https://www.youtube.com/watch?v=FQpeO1l7mXk

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Featured images: Screenshots via YouTube/MegalithomaniaUK