We went out to spend the night at the Volcano House.
We spent most of the day at the Hula presentation
and the visitors center.
Of course, we drove around the Crater Rim Drive
and looked around a bit.
Then when it started getting close to sundown
we drove down to the ocean. We could only see
the red glare of the "Mothers Day Flow"
which hadn't come across the pali (cliffs) yet.
It was still a beautiful sight.
Here's some shots of the park in daylight.

  
Lava flow from the 1974 eruption

  
Halemaumau Crater

    
Another smaller crater and more lava

  
David standing by steam vents.

Then another day later that week, we
were on our way to Waipio Valley and we heard
on the radio that the lava was coming down the
pali like waterfalls.  So we decided we would
drive on around the island after our wagon ride and
we should make it to the Volcano just about sunset.
And we did! And we were really glad. 
Just as they said the lava was coming down
in waterfalls. It was still about 1 1/2 miles away
from the road, but you could see it real well with
binoculars.  And your could see the ohia trees 
flaming up as the lava caught them.

No, I didn't take this picture, but it was taken the night we were there.

This is my picture, but my telephoto wasn't as strong.