Shithouses I have used - Nos. 43, 44 and 45

No 43 - Glastonbury 1971 - a six foot deep trench roughly dug out with a JCB, with scaffold boards to squat/sit on. This was fairly bad - lots of really choking smells, and sights to behold beyond your wildest imagination. And needless to say, the odd hippy having to climb out after having lost balance during the evacuation process. Not somewhere to visit at the height of your trip.

No 44 - Mehrauli, Delhi 1971 - These ancient loos in a buddhist monastry were truly magnificent. Eight feet high hollow concrete cubes with a eight inch square hole in the centre of the top. They were situated in a beautiful walled compound and while squatting over the hole, in the glorious dawn sunlight, you were just high enough to see the magnificent old temples that are just everywhere in that area.
Monks had been shitting in these holes for centuries and mysteriously, they never seemed to fill up. There was no smell, and the best thing was, after you finished crapping, a mongoose came along and went down the hole to see if there was anything of value left behind (in my case, at the time I had bad ameobic dysentry , so I guess he left pretty dissappointed.

No 45 - Vagator Beach, Goa 1972 - These were my favourite loos of all time. Way ahead of the game, this was permaculture in action Big Time. The loos were small dark cells, providing a nice cool refuge from the baking hot Goan sun. You just hung your arse over this ledge and shat. As your turds hit the deck outside, you could hear the satisfied grunts of the Goan pigs enjoying the latest offerings, yum yum.
And yes, the locals did eat pork.