Oldest park

One day me and my sister we plan to go to the oldest park in the world. So we pack everything example water,food and many thing else because no one is in that old park. The shop in there has been closing for like 50 years now. Then our mom and dad drive us to the park they drop us there then they go shopping. We walk and walk suddenly  we  saw one strange tree with a hand coming and the sky get darker and darker.