bamboo railway 

Which is a extremely good ideas contributing to the developing and undeveloped country's transportation. The cost is cheap, no need special skill or tool, needs only labor to do it. It needs just cut the bamboo and assembly to be a long tube and make it likely the railway. Then, the cargo can move onto those bamboo railway.

It's again the innovation from the small races in the world. They base on the natural resources to build such rail for their transportation.

Bamboo comes more application than the people living in the city can create. And bamboo is only a sample about the using of the natural resources. Those small races in the world comes much more small and big idea of using the natural resources.