It'll be interesting to find what follows. 3k ybp is a relatively unique timestamp for tin. This is during or shortly after the bronze age collapse, where many mediterranean civilisations (greece, egypt, assyria, hatti..) receded, and bronze (inc tin) trade receded with them. Bronze presumably became scarce, and ironworking developed as the eventual alternative. The centuries of the last bronze dark age is the mythic…
Shortly before (13-12th century BCE) the "collapse" (12-11th century BCE).
From the PLOS One conclusions: "Although many questions remain unanswered and new ones arose, the integrated approach of using trace elements, tin and lead isotopes turns out to be a promising tool for provenancing and fingerprinting ancient tin objects. It should be followed up by future archaeometallurgical research in order to unravel the enigma of BA tin. In this form, our study should stimulate new discussions on the provenance of tin of the Eurasian BA rather than postulating an origin from a specific deposit."
https://journals.plos.org/plosone/article?id=10.1371/journal...