The article discusses the hypothesis that the Bolaven Plateau in Southern Laos is the parent impact crater for Australasian tektites. The authors of the article support this hypothesis with evidence of proximal ejecta and the presence of tektites between the ejecta and silt layers. However, the hypothesis has been challenged by another researcher who argues that the evidence presented is flawed, particularly the geochemical suitability of the materials found in the sandstone-basalt mixture. The critic also questions the origin of the proximal ejecta, suggesting it may have come from preimpact volcanism or weathering and alluvial transport in the wider area. The thickness of the ejecta is also deemed insufficient for proximal ejecta, and typical impact cratering products are missing. The article concludes that the description of the ejecta disqualifies its impact origin and the hypothesis of the parent impact crater at the Bolaven Plateau. [Extracted from the article]