With others the rock forms last and cracks easily when you stick your hand through it.

The impact was strong enough to form cracks in the quay's administrative building.

She found the deep crack formed by two immense pieces, and sent the flames through.

A small bug stood motionless in the crack formed by the junction of the wall and the floor.

A small crack formed on its surface, then healed, then appeared again.

Hence, several appropriate techniques have been developed to minimize the risk of cracks formed during drying.

Frost weathering can form cracks in the soil that fill with rubble from above.

Instantly, myriads of tiny cracks formed in the dust as the four creatures moved.

That's when the torrent comes out of the cracks formed by the expansion of frozen water.

When enough pits form, they unite to form cracks.