The Sarnowo long barrows exhibit a trapezoidal shape, adorned with large edging stones on their front sides, while the smaller stones of the side border are rarely found intact. These remarkable structures stretch from 50 to 80 meters in length and rise to a height of up to 1.6 meters.
Among the remnants of this ancient landscape, nine long burial mounds of the Niedźwiedź-type have managed to withstand the test of time. Through excavations carried out between 1950 and 1951, and subsequent excavations conducted from 1966 to 1971, these mounds were identified as Funnel Beaker Culture burials. Among the abundant grave goods discovered were exquisite amber jewelry, flint tools, and ceramic artifacts.
Adjacent to this site, an intriguing non-Megalithic Neolithic burial ground, featuring various incarnations, came to light. Sarnowo stands as the second most well-preserved cluster of Kuyavian long barrows, only surpassed by the group located in Wietrzychowice.