Liz Landes found a 30-pound puffball mushroom while on a bike ride on the Haines Highway.

She said she was enjoying her bike ride when she spotted something unusual. "I looked up from the highway and saw what initially looked like a river rock," Landes said. "I turned back and hiked up the hill and was totally amazed. I didn't necessarily have the intention of taking it, but it broke off the ground more easily than I thought."

Landes had found a giant puffball mushroom, a fungi typically found in central and eastern North America. Equipped with only a backpack, she needed help bringing th...