After a few minutes of following her tracks, they realized the forest had ended. Before them stretched a vast white field.
And right in the middle of it yawned a deep pit, like a black mouth.

The fox stopped at the edge and turned around. It seemed like she was waiting.

— What the hell is this? — muttered the second.
They approached, and one of the hunters carefully stepped onto the snow and leaned over to look inside.
— My God… — he whispered. — Down there…  Continued in the first comment 

— There are people!

At the bottom of the pit lay an overturned snowmobile and three people — two men and a woman. They were waving their hands and shouting for help.