Before long they came to a second sump that stopped them cold.

Cavers always try, first, to find a dry way past a sump.

Grabbing hold, he followed the line to the end of the sump.

By the time they reached the sump, terminal exhaustion was setting in.

He explored three corners of the sump, finding blank walls each time.

It was a deadly sump, as most were, but not inordinately so.

No pity, no love; nothing but a sump of hate and fury.

In this case, creative climbing led to a bypass high above the sump.

The sump pump in one corner was still in working order.

Fet saw the sump hose the sandhogs had been working on.

I've gotta do an assessment for flood control: drainage, sump placement-

Yet he could not wholly escape the water of the sump.

If that proves impossible, the last resort is scuba diving through the sump.

He paused to drain the sump of his hookah, then continued.

With neither rope nor hardware to descend farther, they returned through the sump.

The terminal sump, he felt strongly, would not be cracked with conventional scuba.