Megalithic culture following the Younger Dryas

Malta’s stone works aligned to the first rising of Sirius in 5,000 years and followed its change for thousands of years: https://grahamhancock.com/reedijkl1/?

The creators of Carnac megaliths were sailors: https://www.sciencemag.org/news/2019/02/stonehenge-other-ancient-rock-structures-may-trace-their-origins-monuments?

Curious that Malta was and is an island requiring early sailing skills?