Looking for large landscaping bricks possibly know as wall pavers or pewter-retaining-wall-blocks, for use around a pond 2 x 4 meters. So far I cannot find them here.

 

Better to ask in Local Chiang Mai forum

 

Moved

Of those 3 pictures, you will only find the large brown walling blocks shown in the middle picture.

used very often to clad temple walls, very volcanic looking and not structural.

You can find them in the general brick and block yards of which there are numerous in every direction you turn, however those blocks in particular are not as prevalent as standard bricks so be patient.

You may find randon stone setts at khamtieng market, they have many choices for ponds surround, pebbles, boulders, split shales, rocks all charged by the kg