The city is encircled by mountains along the Tigris river.

The bodies were found decapitated days later in the Tigris river.

There's a road that goes east to the Tigris River.

Townshend and his small army advanced up the Tigris river.

There was nothing in that direction but the Tigris River.

Two major bridges over the Tigris River were also hit.

At this time, it looks much bigger than the Tigris River.

The bridges over the Tigris River, they are still it, so we don't see any action at all within the city.

The plane turned right to a heading of 120 south to follow the Tigris River.

So, he commenced his march up the Tigris river.