Don Swanson:
There are a number of volcanic hazards on the big island.  
There are explosions, there is volcanic gas but the one that is 
most common and the one that is likely to destroy most buildings 
is the hazard of lava flows.  The speed that a lava flow moves 
depends on the slope that it is moving on, how steep that slope is, 
depends on how fast that lava is being erupted and how much lava 
is coming out of the vent.  Lava flows are most likely to cause 
damage to buildings and structures but they can be hazardous to 
life so for that reason we have made a map of the big island 
showing the locations of the zones that are of different hazards, 
Zone 1 through Zone 9, Zone 1 being the most hazardous and 
Zone 9 the least. 

Narrator: 
The hazard zone map is useful for a number of reasons; it helps 
people who are considering buying land to make informed choices.  
When you’re about to buy a piece of property find out which hazard 
zone it is in then weigh the pros and cons carefully.