At https://www.sciencealert.com/this-epic-monument-from-6000-years-ago-is-a-feat-of-stone-age-engineering … the dolmen of Menga was built around 6000 years ago – and still stands to this day. It was built of stones with one of them weighing in at 150 metric tons. Located in southern Spain it is a feat of engineering we can only wonder at. The dolmen is built into the side of an earth mound – which was perhaps erected to move the giant capstone into position. Its chamber extends back 90 feet and is lined with large stones that curve inwards, in order to support the capstone. The link provides pictures and and an interesting description of the engineering involved – as well as commenting on the knowledge required to build it. The research was published in Science Advances.
At https://www.livescience.com/archaeology/stunning-bronze-age-burial-chamber-discovered-on-the-english-moor …. this one only goes back 4000 years – and is a cist grave rather than a megalithic monument. It is situated on Dartmoor and was only excavated this year. It can be found on Cut Hill, a high peak on the moors.
At https://phys.org/news/2024-08-ancient-dna-genetic-diversity-roman.html … We know that in the 6th century AD newcomers into Britain married into the British gentry and created a ruling class that continued for several hundred years, the older genes mixed with the those of the newcomers. It seems a similar process happened in Italy after the collapse of the western Roman empire. The evidence comes from a burial site at Collegno dating from the 6th to 8th centuries AD. The elites were genetically diverse – but over time the families intermarried to become the ruling class.
At https://phys.org/news/2024-08-mammoths-ice-age-people-pikes.html …. Clovis points were used to bring down megafauna such as mammoths in the Late Pleistocene, it is thought. Their disappearance is said to be as a result of human hunting abilities. However, it may not be down to throwing spears tipped with Clovis points but to their use as pikes in which large animals charging became impaled on the Clovis points on shafts sticking out of the ground. This may suggest why Clovis points disappeared with the megafauna – or that is one way of looking at it. The points, or carefully crafted stone tools with razor sharp edges made of chert, flint, or jasper, were and are distinctive finds by modern humans. They belong to the Alleroed warm period, a couple of thousand years leading up to the Younger Dryas. Thereafter they went out of fashion.