The austere beauty of the Herdubreid volcano contrasts with the softness of a carpet of moraine willowherb (Epilobium fleischeri) that thrives in an expanse of black volcanic ash. This perennial blooms from late June to August. Its red root contains an antifreeze substance called anthocyanin.

The austere beauty of the Herdubreid volcano contrasts with the softness of a carpet of moraine willowherb (Epilobium fleischeri) that thrives in an expanse of black volcanic ash. This perennial blooms from late June to August. Its red root contains an antifreeze substance called anthocyanin.