Kudzu

So do I!

I hope it is somenthing else....

It's native to southern Japan and China. I guess there's not the same natural control out of its native range. I should say, it's foolish to make a statement like I did, based on an online ID. For all I know, there could be a native vine which looks very similar. If it is, at least it's got lots of uses but clearly needs controlling, as it will be outcompeting a lot of native plants for light, water and nutrients, which in a country with Costa Rica's diversity would be especially terrible.

Is that because it is not native there ¿?

because it's a highly invasive alien species which is capable of swamping native vegetation like this: http://www.jjanthony.com/kudzu/

Craig , why to dig it up and destroy??-...

Oh dear......

Scary plant. If you see it again, dig it up and destroy it.

Now this one does look like Kudzu.

Tienes razón es una Papilonaceae, iniciaré a buscar el genero....Buena serie de flor, hojas y fruto....