On May 1st, the night after Pu’u O’o’s floor fell in, the newly-drained crater was sending up a huge plume of pink ash.*
MORE VIDEO, LINKS, INFO ON PLUME:
Rainy weather, clouds, and plume cleared somewhat to allow for a clearer view of just what had happened to Pu’u O’o on May 2nd:
See this PBS May 5th article for more good photos of the plume and freshly-emptied crater.
A May 3rd satellite photo by ESA’s Sentinel-2 clearly shows the pink ash deposit around Pu’u O’o.
*Geologist Janine Krippner explained the pink color on her Twitter.
I still don’t understand why this ash plume was pink, when the ash coming from Halema’uma’u’s lava lake is mostly gray. Maybe the walls of Pu’u O’o crater were hotter, and/or the rock blasted out of it had cooked for much longer, since Pu’u O’o Crater has had lava in it for most of the past 35 years?