The remains of a Neanderthal camp was found during the renovation of an underground car park in the Dutch city of Den Bosch, local media reported on Wednesday.

The camp allegedly dates back to between 40,000 and 70,000 years ago and is unique in Dutch archaeological history, archaeologists said.

Archaeologists found a large number of flint tools and animal bone remains from reindeer, giant deer, horses and bison. In addition, a lower jaw of a young mammoth was found.

Archaeologist Ronald Genabeek said the discovery was accidental. "We didn't have any idea that this area was inhabited during that period," he said.

The discovery also included skeletal remains as well as tools. "Everything is so well-preserved which is quite exceptional for western Europe," Genabeek added.