Help! I screwed up in Mexico .

[Lisaida]

After I completed the mayan calendar and the ground in the center opened up, I just stood and watched as it was starting to close, that's when I realized I was on a timer. By the time I got down there the ground had closed completely. Is there something I can do to open the ground up again or will I have to start the level over again? I'm such an idiot.