After the helicopter flight, I had a few hours before my flight back to Honolulu. I drove to Pahoa, which had seemed to be on the verge of being wiped out in February, when a new lava flow from Pu'u O'o headed towards the town. But they had a lucky escape - the flow stopped on the very edge of town. I drove out to the recycling station, half a mile from the town centre, where the lava had finally stopped.
This video shows the flow when it was active. About four and a half minutes in there's a view of what it looked like from where I stood six months later.