Dungeon 23 Project - The Ruins of Mount Auyán (Day 054)

You continue down the stairs another 80' to reach the next landing. Here you see a landing 40'x40' with the stairway in the center, the landing is surrounded by four blank walls, but when you step away from the stairway, the stairway, the landing and the walls disappear, shocked you take a step backwards and then another and you are again at the stairway with the same scene as before.

This time you move forward slowly and the moment the scene changes you stick your spear into the ground and clearly mark the ground with an arrow pointing back the way you came. Now looking around you are in the middle of a large grassy plain and all you see is tall grass up to your shoulders in every direction, no trees or building or hills or even mountains in the distance, just the grass and the sky. Oddly in the sky you see two suns near one horizon and near the opposite horizon you see three large moons. Your world has only one sun and two moons.

What do you do?