Obliquity antiquity: Nekhen

Has the tilt of Earth's axis rapidly changed in the last 10,000 years?

Is there any possible evidence that our planets obliquity, change in axial tilt, has moved beyond the expected natural variations?

Nekhen, a location with ancient Pharoah/Egyptian structures, might have been built at an important latitude in relation to the Sun's path across our skies and reflected below on the ground.

Jno Cook investigates this subject in his Saturnian Cosmology and suggests there was a change of the axis and he is inclined to 25 degrees.

Earth axis tilt changesThe 25-degree axial inclination of the Earth is with respect to the new (and current) orbit, and would have been something different when the orbit of the Earth paralleled the orbit of Saturn.

A 25-degree inclination accounts well for the construction of the Sphinx as resulting from a change in the celestial display of the mountain of Jupiter which disappeared in about 2860 BC. At that time Jupiter entered the asteroid belt and its huge lower form disappeared. The coma would have become smaller in diameter. It is almost certain that this was the crisis that exchanged the second dynasty for the first. Current estimates list the end of the first dynasty as 2890 BC. We think political influences, but of overriding importance in antiquity was religious concepts.

It accounts well, however, if it can be agreed that the Egyptians considered the overhead passage of the Sun as considerably more important than its easterly rising. This duplicates the attitudes of the Olmecs of Mesoamerica, who, following the theories of Clyde Winters, likely had North African origins.

Nekhen, the center of early religious activity in Egypt, is at 25.1 degrees north latitude. At Nekhen the Sun would have traveled to stand directly overhead (90 degrees) at noon at the spring and fall equinox if the Earth's axial inclination had been 25.1 or 25.2 degrees. This is because Nekhen is located at a latitude equal to the axial inclination of the Earth.

About Nekhen, Wikipedia reports: Nekhen was the religious and political capital of Upper Egypt at the end of the Predynastic period (c 3200-3100 BC) and probably also during the Early Dynastic Period (c 3100-2686 BC). Some authors suggest occupation dates that should begin thousands of years earlier.
An inclination of 25 Degrees | Recovering the Lost World, A Saturnian Cosmology

Do other prehistoric or recent modern man buildings show potential physical evidence of axial tilt, that our planet has tilted in the past?

Do pyramids, any other Egyptian temples, Stonehenge, mounds, barrows, megalithic structures, Malta's megaliths etc show characteristics they were constructed with plans implying that the Sun was at a different angle in our skies?

Nekhen and the antiquity of obliquity

Using shadows you can measure various physical properties of the Sun/Earth relationships. Using obelisks or other tall objects you can track the movement, slowing down and standstill of the shadow. Or that there is no shadow being cast by the sun dial and therefore the Sun is directly over your head.

Eratosthenes lived in the city of Alexandria, near the mouth of the Nile River by the Mediterranean coast, in northern Egypt. He knew that on a certain day each year, the Summer Solstice, in the town of Syene in southern Egypt, there was no shadow at the bottom of a well. He realized that this meant the Sun was directly overhead in Syene at noon on that day each year.

Eratosthenes knew that the Sun was never directly overhead, even on the Summer Solstice, in his home city of Alexandria, which is further north than Syene. He realized that he could determine how far away from directly overhead the Sun was in Alexandria by measuring the angle formed by a shadow from a vertical object.
Eratosthenes' Calculation of Earth's Circumference | Windows to the Universe

Obliquity ancient evidenceNekhen or Hierakonpolis (Ancient Greek 'Hawk City', Egyptian Arabic el-Kōm el-Aḥmar 'the Red Mound') was the religious and political capital of Upper Egypt at the end of prehistoric Egypt (c 3200–3100 BC) and probably also during the Early Dynastic Period (c 3100–2686 BC)...

Nekhen was the center of the cult of a hawk deity, Horus of Nekhen, which raised one of the most ancient Egyptian temples in this city. It retained its importance as the cultic center for this divine patron of the kings long after the site had otherwise declined...

The structure at Nekhen known by the misnomer 'fort' is a massive mud-brick enclosure built by Pharaoh Khasekhemwy of the Second Dynasty. It appears to be similar in structure and ritual purpose as the similarly misidentified 'forts' constructed at Abydos, all without apparent military function. The true function of these structures is unknown, but they seem to be related to the rituals of kingship and the culture. Religion was interwoven inexorably with kingship in Ancient Egypt.
Nekhen | wikipedia

The Souls of Pe and Nekhen, mentioned first in the Pyramid Texts, refer to the ancestors of the ancient Egyptian kings. Nekhen (Greek Hierakonpolis) was the Upper Egyptian centre of the worship of the god Horus, whose successors the Egyptian pharaohs were thought to be. Pe (Greek Buto) was a Lower Egyptian town, not known for its Horus worship, but Re had awarded the town to Horus after his eye was injured in the struggle for the throne of Egypt.

The approbation of their predecessors, even as mythological and nameless as the Souls of Pe and Nekhen, was important to the Egyptian kings, who referred to them in many inscriptions. Even the Kushite pharaohs saw themselves as descendants of the Souls of Pe and Nekhen.

It appears that the Souls of Heliopolis comprised the Souls of Pe and Nekhen.
Souls of Pe and Nekhen | wikipedia