ENGLISH - unusual story

It all began when my brother and I walked through the mountain and suddely we found strange footprints. Then we continued up to a very dark cave and entered. In the strange cave there were drawings which we didn't understand. As it was getting which we went home. The next day, Anna decided to return with us tosee it. Anna is our neighbour. We returned to the cave, and then we heard a strange sound. Anna was scared but she followed her way and entered the cave to find out where the sound proceeded. That's when she realized thet. There wasn't danger that it was a mouse that ran through the cave. In the end, we went home and wrote in my diary everything that had.