Well, funny enough this guy is from my old home, Austin, TX and my original home, the Big Island of Hawaii - the byline is even from my childhood hometown, Waimea.
What's _not_ funny, however, is this guy's seeming complete lack of common sense and preparation as mentioned by several others.
The article doesn't say from where he set out but both the main visitor center and the temporary kiosk at the end of the road near the active flow have very clear warnings and lists of what to bring if you want to hike near the active flows.
http://www.nps.gov/havo/visitor/lava.htmBut probably most foolish of all, the guy apparently didn't bother to ask _anyone_ familiar with the area about hiking as they most likely would have told him about how easy directions are on the Big Island as well as just how dangerous that landscape is. Because it's a geologically brand-new shield volcano with an approximately 20 degree slope running toward the ocean, all directions on the Big Island include the words 'mauka' (toward the mountain - uphill) or 'makai' (toward the sea - downhill). You may get small local differences here and there but the mauka/ makai slope will always reassert itself after a few hundred yards.
Looking at the Park Service website's map of the road, it's easy to see why he missed it if he were off by even a few degrees. But you can't exactly miss the coastline and you're walking downhill to boot! Plus the clouds are higher near the coast and more helicopters fly near the coast for sight seeing before heading 'mauka' toward the lava source. The guy would have been found inside 48 hours max if he had known to head 'makai'.
Now that having been said, whether he was upslope or down by the shore, this guy was also quite lucky that he didn't die of dehydration or that the lava, both molten or solid didn't kill him first.
I got to hike to the active center with one of the National Park USGS geologists on a special trip back in '88 with my college geology professor who had been in grad school with the USGS guy. We hiked about 4 miles in March and that terrain was truly hellish! Over 100 degrees near the ground (_without_ lava underneath - _with_ active flows underneath it was hot enough to melt the nylon strap off a backpack and turn Vibram boot soles slightly soft!) at nearly 2500 feet altitude with blasting winds most of the time and jumbled, spiky, friable lava rock underfoot all the way.
The Park website mentions the potential of lava to cause bad cuts but I don't think they go far enough in describing the danger of this. Newly cooled lava on the surface often forms 'bubbles' of basaltic obsidian, a material so sharp that they use scapel blades made of it over surgical steel blades for especially delicate surgeries such as eyes. During my hike several classmate cut nearly through the heels of their leather, reinforced hiking boots and we were taking care where we stepped. I would hate to see the potential wound that could happen to a dehydrated, profoundly exhausted man stumbling through one of those 'bubbles' of razor-sharp rock with either an arm or leg. You could very easily bleed out in minutes with one bad fall! All in all, it's some of the most brutal hiking terrain in the world.
All I can say is this guy is lucky to have made it at all and only his knowledge of signalling and perhaps of harvesting water seems to have saved him. In all other respects he seems to be lucky to have just survived.