Regarding what I mentioned about lean-tos in SE Asia, I just googled to see if I could find a reference to that, and found this:
The Kubu of Jambi province (Sumatra), the Punan of Borneo, the Andamanese,3 the Negritos of the Thai/Malay Peninsula, the Mabri of north-ern Thailand, the Agta, the Dumagat, and the Batak, all of the Philippines, build leaf shields (lean-tos). Although Southeast Asian hunter-gatherers construct this simple dwelling, shifting cultivators and more sedentary peo-ple also build them for temporary accommodation. Malay farmers as well built leaf shields on high posts for temporary purposes
I could only see an extract for the article but if anyone’s interested in the source, it’s this:
And then, I also found this article which I will share in case anyone’s interested:
Here’s an interesting extract from that article which mentions Buddhism. I did try to chase up the reference it gives at the end but was unable to find the referenced article. I will highlight some parts I find interesting:
The circular and beehive type is also the predominant type of hut represented in the sculpture of Sānchi and Bārhut pillars. These basreliefs represent mainly two types of huts—(i) small domed huts used as residence by holy men and (ii) huts with semi-circular gable. In a bas-relief on the inner face of the left pillar of the eastern gateway of Sānchi are represented a fire chapel with a domed roof and simple leaf hut with a circular dome. In a bas-relief in a panel of a corner pillar of the ground railing of Bārhut stūpa, there is a building labeled “suddhamma devasabhā” which looks like a regular temple. This temple-like building has a two storied domed roof modelled on the dome of huts. Whereas the dome of the huts as a rule, is in four sections the spire of the building circular. These domed huts, says Chanda, may be the simplest type of kūṭ āgāra referred to in the Pali texts. The method of its construction appears to be a favourite simile with the authors of the Nikāyas. Thus in the Samyutta Nikāya it is said: “Just as in a peaked house, brethren, whatever rafters there are all converage to the roof peak, all go to junction there, even so whatever wrong states there are all have their roof in ignorance, all may be referred to ignorance, all are fixed together in ignorance, all go to junction there”. This kutagara or domed hut was also one of the five kinds of dwellings which Buddha allowed his monks to live in.104
Does anyone have any sources for these “five kinds of dwellings”? And… I find it interesting again that even in this, it seems to be implying again no walls, but rather, a domed roof, perhaps similar to the hunter gatherer type dwellings where the roof goes all the way to the ground? I also find it fascinating that the design of stupas might be derived from imitating the simple design of wall-less sramana huts! (Well, when I say ‘wall-less’, I mean in the sense of no specific walls, just a roof that goes to the ground).
And just for interest, here’s a picture of a recently made hut, I wonder if perhaps similar to what they’re talking about: