Layers of emerging rock gradually formed a rocky dome of nearly 300 metres at the centre of the crater floor.

These peaks are caused by the gravitational collapse of crater walls and subsequent rebound of the compressed crater floor.

The crater floor has several small craterlets across its surface, and it has a low ridge near the midpoint.

Several tiny craterlets lie across the crater floor.

Deltas or fans are commonly present where a valley enters the crater floor.

Where a crater formation has associated satellite craters, these are detailed on the main crater description pages.

This crater formation has been heavily worn and eroded by impact erosion.

The results were inconclusive, but not inconsistent with the estimated 800 million year age of crater formation.

Observations in the walls of the pit craters indicate that there have been several episodes of cone and pit crater formation.

The fact that we know when their surfaces were formed will also be useful in determining the rate of crater formation in asteroids.

The water could then flow out onto the surface when it reaches a break, like a crater wall.

Lateral explosions excavated a notch in the southeast crater wall.

The crater wall and interior have been heavily eroded by many subsequent impacts, leaving the features rounded and irregular.

Inside the crater walls, they saw a 200m-thick stack of layered rock that could be identified as being formed by running water.

It has come via a technique known as 'nearinfrared reflectance spectroscopy', used to analyse the wavelength of sunlight scattered off crater walls and other features of the moonscape.

This void was then filled with a much larger charge, which was also tamped, and then blown when required to create a crater as an obstacle.

This beam of light would create a crater where the storm cellar was, which was dug prior to filming and digitally covered up so as to keep the illusion.

The landslide, which pulled down the cliff, created a crater about 600ft long by 400ft wide and 40ft deep.

A series of massive explosions created a crater a mile wide.

The terrible weather, damaged water tables and vast bombardments created the cratered landscape of our most fearful imaginings.

Three cars, a stretch of road and part of a riverside cliff also disappeared into the 1,640ft wide, 100ft deep crater.

Cars were crushed and a threemetre deep crater left in the road.

The car had been penetrated from above to leave a small, deep crater in the ground beneath it.

The explosion resulted in a 70 ft deep crater, with surrounding trenches sandwiched shut so fast that soldiers were crushed still in their standing positions.

The stone was retrieved 15 minutes afterwards from a deep crater and was cool to the touch.

Maars range in size from 61to- 1981 across and from 9to-198 m deep and are commonly filled with water to form a crater lake.

Cracked rock and sediment layers above the explosion often settled into the cavity to form a crater.

The 1ft-deep crater formed as part of the anti-clockwise carriageway collapsed in heavy rain following roadworks.

The test chamber was immediately disconnected by remote control from the pipe and quickly winched to safety before the ground could subside to form a crater.

In addition, a smaller impact occurred along the northern crater wall, forming a crater 4 kilometers wide.

I touched the floor of a huge crater beside the vehicle.

The huge crater - measuring a staggering 35ft wide and 20ft deep - appeared with a dramatic 'bang' yesterday.

He crawls frazzled from the huge crater that has been left behind by the explosion.

A photographer who witnessed the aftermath said that the blasts had made a huge crater in the road.

The gigantic explosion left a huge crater 33ft across.

Sometimes, they are big enough to leave a crater.

Astronomers say a 500-yard asteroid would leave a crater the size of a city.

The three explosions, which left a crater in the path, interrupted power supplies to 2,000 people.

The explosion left a crater more than 20ft wide.

The plan was to see if they could prevent the 800kg hunk of metal from leaving a crater in the landscape.

A lunar crater and the asteroid 1788 were also named after him.

A lunar crater was named in his honour.

The interceptors then rise from their hangar via elevating platforms to a launch pad disguised as a lunar crater.

He also has a lunar crater named after him.

In recognition of his scientific achievements, a lunar crater was named after him in 1970.

In other words, water molecules produced close to a cold, dark polar crater should have the highest probability of surviving and being trapped.

Previous spacecraft spied hints of possible ice in polar craters.

Water-ice deposits that exist in some polar craters could serve as a source for these elements.

He buries their remains in a fresh shell crater.

In the summer there was jam-making at the family's dacha and mushroom-hunting in woods still scarred with shell craters from the great patriotic war.

These have become a vast tangle of fallen trees, interspersed thickly with shell craters.

Around us were shrapnelscoured and abandoned buildings, the road outside marked with shell craters and earthen berms.

Time and weather have softened the shell craters.

They formed in a lake inside an extinct volcanic crater lined by forest.

That leaves cash for optional activities: canyoning, kayaking on a volcanic crater lake, mountain biking before a spa visit, or a full-day jeep tour exploring the islands' unusual landscapes.

Such features may include volcanic crater lakes and lava domes after the event.

They board and the ship takes offjust as the volcanic crater erupts beneath it.

The nine most recently described members of this species complex are considered endemic to their respective small, volcanic crater lakes.