The third terrace, the largest, contains the richest concentrations of archaeological remains.

In food, black often implies a rich concentration of flavor as well as sophisticated color.

Zambia's famous 'walking safaris' began here, and its plains are home to a rich concentration of wildlife.

These, however, include the richest concentration of villas of all periods.

The Alcoota fauna is about 8 million years old and has a rich concentration of vertebrate fossils.

Small specimens were often preserved in association with unusually rich concentrations of conchostracans.

It has been described as "the richest concentration of iron ore on the face of the earth."

The richest concentration of portraits date from this year.

Few neighborhoods have as rich a concentration of cultural venues as the East Village.

He had wandered into this area, following a rich concentration of the thoughts of meat.