Humans with undiscovered alien tech?

Carvings in Buddhist-Hindu Khmer temple walls in Cambodia show many strange things.

The Egyptian plateau has an underground world under the sand -- not built by humans.

Remarkable ancient carvings portray humans using undiscovered technology

Ancient carvings found across the planet are turning heads for good reason. They show human-like figures holding what looks like pieces of advanced technology no one can identify. From the lush jungles of the Americas (Turtle Island) to the dry plains of Turkey (Anatolia) to underground caverns beneath the Great Pyramid of Giza, each carving adds to the puzzle. What were Buddhist and Hindu artisans carving on temple walls all over Cambodia, Indonesia, Laos, and Thailand? Researchers continue to study these discoveries, hoping to understand what human beings thousands of years ago were really trying to show through stone and symbol. More: (MSN) Science: Remarkable ancient carvings portray humans using undiscovered [possibly alien] technology

• Jay Marc Nojada, It's Blossom, 11/25/25; Seth Auberon, Pfc. Sandoval (eds.), Wisdom Quarterly

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El Mirador (which is Spanish for "The Lookout," "The Viewpoint," or "The Belvedere") is a large pre-Columbus Middle and Late Preclassic (1000 BC–250 AD) Maya settlement in Mesoamerica, located in the north of the modern department of El Petén, Guatemala.

It is part of the Mirador-Calakmul Karst Basin of northern Guatemala [1]. El Mirador is considered to be the most important complex of ancient cities from the Preclassic period.

Cholula Pyramid, Pueblo, Mexico, size of a mountain, topped by an imperial Catholic church

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It features causeways and pyramids, among which the pyramid of La Danta stands out, one of the tallest and most voluminous in the world [likely the world's largest even bigger than Cholula in Mexico, Giza in Egypt, but maybe not as large as the Bosnian Pyramid or the mountain Gunung Padang in formerly Buddhist Indonesia or the world's largest excavated Buddhist temple, which is a pyramid called Borobudur].

Circumambulation (pradaksina) at Buddhist pyramid temple called Borobudur

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The site is estimated to comprise some 800 cities, and the location of La Danta was the epicenter of trade, religious ceremonies, and the royal residence of rulers. Furthermore, the city was interconnected with others via 13 causeways, representing its power over the other Mayan cities in the region [2].

El Mirador has white roads measuring 40 meters wide and between 2 and 5 meters high, forming what researchers consider the world's first highway system or superhighway [3]. More