The Hindsgavl Dagger. In the Neolithic period the flintworkers achieved very high technical standards. The magnificent dagger from Hindsgavl with its blade less than 1 cm thick is the finest example of the flintworkers’ outstanding skills at the end of the Stone Age. It was found around 1876 on tihe island Fænø in the Little Belt. The dagger type is called a ‘fishtail dagger’ because of the fishtail-formed hilt.