The option is to follow the left track, which going down reaches and crosses the stream.

An explosion directly behind rocked them up onto the left track.

The left track is filled with a single window.

The left outer track had been built for about a mile, but the other three were barely a hundred yards long.

The remains of the left outer track, which they still followed, were now indistinct.

He put it in the left track and let it roll.

Leung's M-24 lost its left track and driver from a rocket hit.

And on the left track stood one of the vehicles, motionless, ready for us to use.

He began to pivot his machine on its left track to go back home.

The left track raced as the weight went off it.