Well put it this way, the pic martin put up is luxury.
Think hole in the ground and it you are lucky it has a homemade wooden hut.
Also Siberia in the summer is 40*C and in winter it can hit -50*C....... smell in the summer is horrendous and the chill in the winter, well you can imagine.
I did have a 'moment' after eating something dodgy in the winter. It was a decent day so about -37*C and I well, had to go.... immediately! A few body parts touched the snow and it was a little uncomfortable....
Funny but something similar happened in the Sahara too when it was 50*C but it was a rather warm shock from the sand
I do have lots of non toilet related stories!