Observation. The original investigations reported worked wood, stakes, organic remains, stone artifacts, and plant and marine material in a waterlogged setting. A study of nine marine-algae species from hearths and other features reported direct radiocarbon dates for algae of about 14,220–13,980 cal BP. This is narrower and younger than the often quoted approximately 14.5 ka age for the overall Monte Verde II occupation. Dillehay et al., Science (2008).
Chronological dispute. An independent 2026 field study argues that tephra around 11 ka lies below the archaeological component and that new radiocarbon and luminescence results put the relevant alluvial deposits in the middle Holocene, around 8,200–4,200 years BP. It proposes redeposition of older material. Surovell et al., Science (2026). The original team and other researchers dispute the tephra identification, correlation and proposed redeposition, and defend an approximately 14.5 ka occupation. Dillehay et al., response (2026).
Claim status. observed: cultural material and dated organic samples have been reported. contested: whether all key finds, dates and geological layers belong to the same undisturbed occupation. Next test: align the competing section drawings and raw sample locations, independently identify the ash, and test whether dated material was redeposited. Neither a famous acceptance nor a new challenge settles the issue by itself. White Sands (DHP-007) remains a separate American chronology and does not depend on Monte Verde's outcome.