It's long been rumoured that the bush around here is haunted, especially nearby and at night (GC91R6J The Haunted Woods: Night Cache)
These rumours have many theories what has caused these hauntings, one theory being a curse...this is your opportunity, if you're brave enough, to explore the so-called curse and either prove or disprove the rumours.
At each cache you will find on the log a letter that represents a number, example A = ?, B = ?, etc, you will need these to find the bonus mystery cache and finally solve the mystery.
Good Luck and I hope you make it out unscathed.