[1] It is located a few yards east of the River Elwy, near the hamlet of Bontnewydd, near Cefn Meiriadog, Denbighshire.

Bontnewydd was excavated from 1978 by a team from the University of Wales, led by Dr. Stephen Aldhouse Green.

[3] The teeth show evidence of taurodontism, enlarged pulp cavities and short roots, which is characteristic of Neanderthals, and although it is not unique to them it is one of the reasons that the species was identified as Neanderthal.

In Britain, the wolf Canis lupus was the only canid species present from Marine Isotope Stage 7 (243,000 years before present), with the oldest record from Pontnewydd Cave.

[4] The site is also important for its mammoth steppe fauna, such as reindeer and woolly rhinoceros, dating to between around 41,000 and 28,000 years ago.