I am a movie director and I just received the following movie plot. Could you help me answer this question? If not, let me know by writing "Not answerable". Plot title: The Fountain Movie plot: This movie takes place in three interweaving narratives that encompass the age of the Spanish conquistadors, the near-future period and a journey through deep space in an ecospheric starship.The scientist: Research oncologist Tommy Creo (Hugh Jackman) attempts to reverse brain tumors in rhesus monkeys through animal testing. His work is motivated by his cancer-stricken wife Izzi (Rachel Weisz). When the tests fail on a monkey named Donovan, Tommy is inspired to break medical protocol and use an untested compound derived from a Guatemalan tree. At first, the drug fails to stop the tumor's growth, but surprisingly rejuvenates Donovan, healing his wounds and improving his cognitive abilities.At home, Izzi points out a golden nebula to Tommy, describing it as Xibalba, the Mayan underworld. She also shows Tommy a book she is writing, set in the age of conquistadors, titled The Fountain. When she goes to sleep, Tommy reads the book and falls asleep as well. When he wakes up, he finds that Izzi has gone to the museum. He meets her there, and she explains the creation myth of the Mayans. She suddenly collapses from a seizure and is rushed to the hospital. She tells Tommy, at her bedside, that she no longer fears death. Tommy does not accept this and returns to his lab, working harder to find a cure for Izzi's brain tumor.During a visit, Izzi goes into cardiac arrest, and Tommy is forced to leave the room. Tommy's associate Dr. Lillian Guzetti (Ellen Burstyn) finds him in the hall and tells him that Donovan's tumor is shrinking. Tommy rushes back into Izzi's room with the news, only to find that his wife cannot be resuscitated. At Izzi's funeral, Tommy tells Guzetti, "Death is a disease, it's like any other. And there is a cure. A cure. And I will find it."The Conquistador: In 16th century Spain, Grand Inquisitor Silecio (Stephen McHattie) demonizes the Spanish Queen Isabella (Rachel Weisz) as a heretic. He slowly acquires territories as part of his plan to take Spain from her, killing her followers along the way.... My question: What do the Mayan Warriors force Tomas to climb?
a pyramid