Hello David - Most of Redoubt is covered in snow and ice. For the parts that were inundated by lahars, I do not know the acidity levels there, or the regrowth. Chris Waythomas (cc'd here) might be able to give more information. Thank you, Cheryl Cameron -------- David Jacobs wrote: Is there plant regrowth at Redoubt Volcano? I was thinking Brush willow. It is full of Acid and may grow back where there is acidic soil. -- Cheryl Cameron Geologist, Alaska Volcano Observatory Alaska Division of Geological & Geophysical Surveys voice: 907-451-5012 fax: 907-451-5050