The Frozen Toilet - A scary but true story

Recently I went out to a Russian drilling rig to look it over before we started drilling. Of course it was a bitingly cold day around -30 deg C with a piercing wind.
As with all cold weather it caused a need to go to the toilet. I was pointed to a wooden shack sitting precariously on top of a snow drift off to the side of the location. The need was greater than the obvious dangers.
I opened the door slowly and looked into the dark interior. It was a simple interior with wood walls and a large round hole in the floor. The floor of the interior was wet with melted snow as the interior was heated by a small electrical heater( all mod cons! ). I stepped in to use this Siberian comfort station and two things immediately happened; one, I started to slide on the wet floor towards the gaping hole, and two, was hit by the most incredile stench I have ever had the misfortune to smell. I back peddled as fast as I could mainly to stop myself from falling into the hole, but also to escape the smell.
I took great gulps of the lovely fresh air as soon as I got out. But the need was even greater. I took a deep breath and plunged in, this time taking care to wedge my feet against the walls.
I looked into the hole to see, to my amazment, a brown stalagmite poking up to the level of the hole in the floor! I suspect all would have been well had they not put a heater in there thus melting the top of the brown stalagmite!!!
Never again!!