Lavaka
Lavaka is when a big hole is made in the ground by erosion. Imagine you take a spoon and you dig a hole in a big pile of sand. Now, imagine the rain is like a lot of spoons that keep digging the hole deeper and wider over time. Eventually, the hole becomes very big and deep, like a giant bowl. That's what a lavaka looks like, but it is much bigger than your sandcastle hole.
People live near lavakas in different parts of the world, like Madagascar. They are considered dangerous because they can become larger and deeper when it rains a lot, and sometimes people or animals can fall into them by accident. However, sometimes people use the lavakas to collect water or grow crops, because the ground at the bottom can help the plants grow better. So, even though they can be dangerous, lavakas can also be useful in certain ways.
People live near lavakas in different parts of the world, like Madagascar. They are considered dangerous because they can become larger and deeper when it rains a lot, and sometimes people or animals can fall into them by accident. However, sometimes people use the lavakas to collect water or grow crops, because the ground at the bottom can help the plants grow better. So, even though they can be dangerous, lavakas can also be useful in certain ways.