The Mud Hill Incident

well, i live on a little island in denmark in a coastal city. this is also where this story is centered. me and my buddy know this place that we call "mud hill" where we ran around and played as kids. whe would climb around and find all sorts of things in the ground up there. we have even found bullet cases and such, and therefore we would make up stories like it was a nazi mass grave and so, but thats not what this story is about. this story starts a couple of years back where we where 12 years, and we where bored shitless. my friend lives very close to mud hill, so we decided to go there for lulz or whatever. it was a sunny day with a totally cloudless sky, but as we stepped outside and walked a couple of metres, it changed so sudden and it got windy like shit and started to rain a bit. well, we didnt really cared much and continued. but as we where a 100 metres away, all the gates on the row of houses left of me blowed up as i walked past them, wich freaked me out alot, and we allmost turned around, but we just thought "wtf" and continued. we got down there, and fucked around a bit at the creek close by, throwing some rocks and swinging over the creek in the rope somebody hung up in a tree, when we suddently heard a scream. we thought "well some girls must be playing close by" and we decided to investigate. we climbed the highest of the two hills and looked down the middle of the two mudhills, but no one came around. it freaked us out abit, but we stayed. we layed in the grass for a while, when another scream was heard. we hid in the tall grass and looked over at the creek, no one. then another scream was heard, and another one and it seemed to get closer and closer. but suddently as we layed there in the grass, the same scream was heard. right behind us. we ran as fast as we where able back to my friends house and my friend said "wtf magnus (my name) what the hell was that!" and to this day, we still havent found out. we took back there a couple of times with some other friends, but it seemed to only happen if we went the alone or just two guys. we didnt went there for a couple of months, but my sister and i decided to go. same thing happened, sudden change in weather, screams. but the weird thing was, that as we parked our bicycles near a worn-out barn, it suddently started banging like somebody was trying to get out and we ran to our bikes and drove home. we stayed away for the rest of that year. me and my friend recently decided to go back to check, but nothing happened, like a ghost finally found peace of a curse was lifted. we have no idea, but we havent heard anything. they are currently construction going on, and they are building houses there, tearing down ol´ mud hill. its sad to see, but i cant help to wonder.. what happened? and what are gonna happen to the people moving in to those houses? i dont know....