Looking southward, the city seems so close. And it is. The CIQ complex is only 1.6km away from this cache location, potentially a 20 minute walk. Yet in terms of perceived walking distance and difficulty it might as well be 5km and a one hour walk.
This is the kind of situation where 'greenways', or high quality bike and pedestrian networks, have proven very successful in many cities around the world. Considering that there is ample space available along water pipelines passing through government-owned land, and that these pipelines in any case require regular upkeep and access, and that it's already possible to walk along many sections of them, upgrading the alignment into a high quality greenway is not hard to imagine.
The wall facing onto this potential greenway alignment initially featured many doorways from adjacent housing compounds, though these have almost all now been permanently blocked off and are now rusted over. If a greenway was actually implemented, these long-lost entrances would surely re-open.