Where did the pine forest go?

Where did the pine forest go?
Photo is illustrative in nature. From open sources.

This story happened to my father. This was several years ago. My parents have a dacha in the Krasnokutsky district of the Kharkov region. MyFather loves to wander through the forest and knows it well. The forest where he walks, not far from the dacha, is pine.

So, he says that he was once walking through the forest, and in a place where he had often been before. And then he sees that he is walking not through a pine forest, but through an oak forest! He also saw a pond there, which he had never seen in those places, but he knew for sure that there was no pond there. He got scared and began to look for a way out, guided, as he said, by the sun. After some time I found myself in the pine forest again.

He also said that while he was in the oak forest, he felt very light, somehow rejuvenated. After this incident, he asked the local residents about the pond and the oak forest, and he was told that in those places there was only pine forest, and there was no pond. How can this be explained?

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