The largest is the bio-bio, which has a total length of 220 m., 100 of which are navigable.
A great battle had just been fought on the banks of the river bio-bio.
The bio-bio is navigable above the city for 100 m. and considerable traffic comes through this channel.
It is the largest city of Chile south of the bio-bio and has a population of 29,557, ranking ninth in the republic.
We have examined the chart, and find these hills to be the "Paps of bio-bio," and Talcahuana lies several miles beyond them.