Draw a simple curved line like this, and do a 3D revolve on it, using the "Wireframe" option for the surface. Add a bit of an offset to thicken the central pillar.
When you have finished and you are happy with the general look of it, Expand it, and ungroup until there are no groups left, and delete some of the extra lines.
Rotate it to the orientation you ...
It's difficult to tell how this was actually created. It could for example be a scan of a print made with a rubber stamp or even a linocut. It has what I'd call a hand made print look to it.
Anyway, here's one method using Illustrator to create something similar for the trees, as an example.
Create your drawing from some thick manual strokes using the Pen ...
Actually this lizard is created on the basis of a hexagon, not a triangle! Here is the hexagon:
Here is a movie how to deform the hexagon to get the lizards:
You might be tempted to think a triangle would suffice to make lizards because we may divide a hexagon into six triangles. How do we know a triangle would not suffice? ...