Four friends enter an abandoned cave, unaware of the deadly secrets lurking. They soon learn—too late—why no one dares to explore it. What starts as an adventure quickly turns into a nightmare.

Meanwhile, Donald Weltner suffers a horrific accident deep underground, in a tragedy that rivals even the infamous Nutty Putty Cave disaster of John Jones. If you thought that story was terrifying, wait until you hear this one.

These are the chilling tales of when cave exploration goes wrong.

Music by: 
CO.AG (youtube)

Reference sources:
MrDeified (youtube)