Among the features of the park is a set of twelve stones set on the ground in a two-by-six vertical formation . The stones contain the names of the last twelve known survivors of the 1937 Ponce massacre . In addition to the name the survivor , the person 's date of death is also engraved on each stone . Also engraved are a Christian cross and the letters " RIP " ( Rest in Peace ) . The names and dates on some of the stones have faded away due to exposure to the weather elements . The names and dates on the twelve stones are as follows :
Ponce massacre
Ponce massacre
Parque Pedro Albizu Campos