However, the information center believes there is a high possibility that other prehistoric sites remain within the City.

Previous studies and information indicated large prehistoric sites were present in this area.

But this year there are plans to open the prehistoric site during the 1999-2000 off-season as well.

The area has the largest concentration of prehistoric sites in the Americas.

The gorge is a highly important prehistoric site for the study of human evolution.

All but two of the prehistoric sites are within this river isthmus.

On the other hand, there is a prehistoric site at Tragonatu.

The district is home to a number of prehistoric sites which have only recently been studied.

It is one of the most important prehistoric sites in the world.

Be warned, though: many of the key prehistoric sites are closed.