RENEE MONTAGNE, HOST:
Good morning. I'm Renee Montagne with news of a rhododendron rescue. Who knew a shrub known for its brilliantly colored blooms could be life-threatening? But a couple hiking in Ireland's Knockmealdown Mountains was trapped when they got lost on a hillside so thick with wild rhododendrons, one rescuer told the BBC it was as impenetrable as a jungle - so dense that people could not hear each other, which is why it took five hours to rescue them. It's MORNING EDITION. Transcript provided by NPR, Copyright NPR.