Gravettian is a big name for a group of people who lived a long long time ago, way before we even existed! They lived in Europe about 28,000 to 22,000 years ago, which is even before the first pyramids were built in Egypt.
Now, these people were very smart and creative. They made tools and weapons out of stone, bone, and ivory, which they used for hunting animals and cutting up plants. They were also good at making things beautiful, like figurines made of ivory or clay, that looked like animals or people.
One thing that these Gravettian people are known for is making little sculptures of women with big hips and breasts. Scientists think that these sculptures might have been used for some kind of fertility ritual, which is a fancy way of saying they might have been trying to make babies.
The Gravettian people also had some pretty interesting behaviors. For example, they buried their dead with lots of decorations and some have even been found with jewelry! They also made paintings and drawings on the walls of caves that they lived in, which are now super famous and known as some of the earliest known examples of art.
So, all in all, Gravettian was the name given by scientists to a group of ancient humans who were really smart and creative. They made cool stuff, loved art, and had some really interesting behaviors, which are still studied by people today!