Only the coastal plain, 7 percent of the total area, would be open to drilling.

The traditional boundary of the coastal plain is the fall line.

He has also written about the people living in the coastal plains.

The land south and west of the city is flat coastal plain.

No one knows for sure how much oil there might be below the coastal plain.

But no one knows how much oil is in the coastal plain because very little exploration has been done there.

There was little of it here on the coastal plain.

By now they were about 600 feet above the level of the coastal plain.

Very few houses could be seen in the coastal plain.

The land below looked like the interior rather than the coastal plain.