Letters are summarised as:
1) Belgian caverns [SE of Dinant, Palaeolithic human remains]
2) Discovery of human remains in cavern [list of animal species also found in cave]
3) Cavern near Dinant, Palaeolithic man [butchery marks on animal bones potentially from humans, disarticulated bone assemblage including cave lion, cave hyena, bear, rhinoceros and horse]
4) Shells of the Lesse caverns [stone age flints from Vertus a commune of Marne, Belgium and polished stone artefacts from Spiennes, suggests ancient trade or migration route].