Martha Ohlson, Sierra Club outings leader and extreme backpacker, will share her recent treks across Isle Royale National Park in Michigan. Free. Fort Worth Botanic Garden 3220 Botanic Garden Blvd. Azalea Rm Ft Worth, TX United States Event URL Event Tags Bird & Nature Walks Conservation Environment Wildlife Date and Time Thu, 02/20/2014 - 01:00 - Thu, 02/20/2014 - 02:30