12-03-2013, 02:31 AM
The links below are to maps showing all the lava flows on this island. Warning some of the files are huge so you may want to download first. Some of the past flows such as the Ai Laau flow which covered most of Puna apparently lasted for several hundred years.
http://pubs.usgs.gov/ds/2005/144/
http://www.nature.nps.gov/geology/invent...raphic.pdf
http://pubs.usgs.gov/ds/2005/144/
http://www.nature.nps.gov/geology/invent...raphic.pdf