Why do big holes keep appearing in the ground?

There are several reasons why big holes may appear in the ground, some of which include:

1. Natural sinkholes: Sinkholes are a common natural phenomenon that occur when underground caverns collapse, causing a hole to form at the surface.
2. Excessive rainfall: Heavy rainfall can saturate the ground, leading to erosion and the formation of sinkholes or other holes.
3. Underground mining: Mining activities can weaken the ground and cause it to collapse, resulting in sinkholes or other holes appearing.
4. Improper construction practices: Poorly constructed buildings or infrastructure can cause the ground to shift and form sinkholes or other holes.

It is important to be aware of these potential causes of big holes appearing in the ground and take steps to prevent them from happening in order to ensure the safety of people and property.