Original: It would take some 170 years and the help of the Xiu Maya before the last recognized Maya stronghold fell , that of the Itza capital of Tayasal on Lake PetÃ n ItzÃ , in 1697 .
Simplified: It was about 170 years later before the last Maya stronghold fell , that of the Itza capital of Tayasal on Lake PetÃ n ItzÃ , in 1697 .