The eruptions in the Holocene on the link: Holocene Volcanoes in Kamchatka were not added yet, but they are listed on the Peter L. Ward's supplemental table. Some of the eruptions are not listed on the Global Volcanism Program timetable as well, at least not as VEI 6. The timetables of Global Volcanism Program; Bristlecone pine tree-rings ("Pinus longaeva", "Pinus aristata", "Pinus ponderosa", "Pinus edulis", "Pseudotsuga menziesii"); the 4 ka Yamal Peninsula Siberian larch ("Larix sibirica") chronology; the 7 ka Scots pine ("Pinus sylvestris") chronology from Finnish Lapland; GISP2 ice core; GRIP ice core; Dye 3 ice core; Bipolar comparison; Antarctic ice core (Bunder and Cole-Dai, 2003); Antarctic ice core (Cole-Dai et al., 1997); Crête ice core, in central Greenland, benthic foraminifera in deep sea sediment cores (Lisiecki, Raymo 2005), do not agree with each other sometimes. The 536–547 AD dust-veil event might be an impact event.