So this is the latest on the composting toilet, or as it is alternatively known, the 'VIP Latrine' (Ventilated Improved Pit Latrine). The rear of the pan can be seen in these progress photos. The concrete 'ring-beam' is also set to go and will reinforce the top of the hole. This will prevent dirt from caving into the pit.
The pit itself was dug in two efforts, with three generations showing a keen interest in this venture. The pit features an emergency evacuation step for younger users struggling with incorrect technique.