This is Villager Temple, a minigame map based off FVDisco's famous Temple of Notch. In this map there is a large villager statue which will either gift you gems or condemn you to die.

To use the map, throw an item in the water, the entrance will open then walk down to the end of the corridor and through the doors. Once on the platform wait a few seconds. If the villager statue cries then you lose and will drop down to a pool of lava. If you win, gems will be dispensed from above you. The chances of winning or losing are 50/50. This game works best in survival.

The spawnpoint is: 320 66 -303