It consists of a nursery rhyme written in black ink on the side of a large rock in Senora National Park. The nursery rhyme itself is a reference to the serial killer. It is proven that the poem was written by the famous serial killer Merle Abrahams. In the poem, the fourth line Four called mom could be referencing the murder of a child. In Merle's home in Sandy Shores, a small pair of shoes can be seen dangling from a ceiling rafter, thus implying Merle murdered a young child. Calling mom is compared to screaming for a mother, which may be what that child may have been doing.
The nursery rhyme goes as follows:
ONE IS DONE