Cantabrian stelae are big rocks that have been carved or decorated with pictures and symbols. They were made a long time ago by people who lived in a place called Cantabria, which is in northern Spain.
Imagine you have a big rock in your backyard. Now imagine you draw a picture on that rock with paint or a marker. That's sort of like what these people did, except they used special tools to carve into the rock and make designs that were very detailed and special.
The Cantabrian stelae were made by the people who lived in Cantabria a long, long time ago - even before your parents or grandparents were born. These rocks were very important to them because they used them to tell stories, remember important events, and even show off some of their beliefs and traditions.
Some of the carvings on the Cantabrian stelae look like animals. Others have things like spirals or circles on them. These pictures can help us learn more about the people who made them and what was important to them.
So, in summary, Cantabrian stelae are big rocks with pictures and symbols that were made a long time ago by people who lived in a place called Cantabria. They used them to tell stories, remember important events, and show off their beliefs and traditions.