This is the hole outside Sarah Jenkins' house in Upper Basildon, near Reading which appeared earlier this month and is still growing.
It's been described as one of the biggest sinkholes in the UK.
But what exactly is a sinkhole and how and why do they open up? Sinkholes can take thousands of years to form and usually happen when rock underneath the ground is dissolved by acid rain.
That creates a hole under the surface and then the top level of soil falls through when it can't take the weight above it any more.
The final collapse can take anything from minutes to hours.
In the latest case in Berkshire, the house is sat on top of an old brick factory with underground tunnels.
Watch the video of this woman falling into a hole as it opened up in China. She did survive.
Rock which dissolves easily, like limestone or chalk, is more likely to be affected. That's why lots of sinkholes appear in Florida, which is built on limestone.
Heavy rain and bad drainage systems can make the holes more likely.
Britain usually has two or three cases a year, but in February 2014 alone, six sinkholes appeared after heavy rain.
Experts also warned more were likely because of the bad weather.
See trees and water at a forest in Louisiana being sucked into a sinkhole in 2013.
The world's deepest sinkhole is in China - 2,172ft (662m).
The biggest is 50 miles (80km) by 75 miles (121km) in Egypt.
But many are often just a few metres wide.
There can be some warning signs of sinkholes forming in built-up areas.
You might notice doors and windows aren't closing properly, cracks are appearing in building foundations or you may even feel the ground move.
But it's not easy to predict.
Sinkholes are more common in less built up areas, mainly because developers avoid risky sites.
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It's 32ft (10m) wide and 16ft (5m) deep.