Who are the children following when they return to the lamppost?

In C.S. Lewis's "The Chronicles of Narnia," when the children return to the lamppost, they are following the direction of the Pevensie siblings, who have ventured into Narnia. The lamppost serves as a landmark and a point of reference for their journey. It symbolizes the boundary between the real world and the magical land of Narnia, guiding them as they navigate their adventures.