yuquiku is incorrectly written, and should be written as "Yuquiyu" being its meaning:
The correct term is Yuquiyu. It is the sacred place of the Taino culture. If name does honor to the God of light and life. It is a well or pure water lagoon, located in the middle of the forest in the mountains or Sierra of el Yunque in Puerto Rico. It is a nice eco-tourism site. Yukiko or Yuquiko is a name of woman in Japan.