A wooden fragment found at Uunartoq, Greenland, in 1948 has long been thought to be a sun compass that Vikings used to navigate. Balázs Bernáth, et al., from Eötvös University and Estrato Research and Development Ltd, both in Budapest, Hungary,…
Balázs Bernáth et al have suggested that the Viking sun compass found at Uunartoq is a sun shadow board designed for determining local solar noon, because the gnomons on it contain errors that could lead to navigational problems.