Mann Wilderness Area State Preserve

160th Street
Ackley, IA 50601

641-648-4361

Mann Wilderness Area is a rugged forested area along the Iowa River Greenbelt. This 103-acre preserve is located five miles north of Steamboat Rock in northeastern Hardin County. The Hardin County Conservation Board purchased the rugged area from Joe and Flossie Mann in 1960. It was dedicated as a biological and geological state preserve in 1979.

Located near the eastern edge of the Des Moines Lobe landform region, the topography of this preserve is dominated by a long, narrow ridge paralleled by deep ravines draining into the entrenched course of the Iowa River, which forms most of the preserve’s southern border. This highly dissected landscape was formed by downcutting streams that eroded through soft glacial deposits to the underlying limestone bedrock. Rugged topography with frequent outcrops of these Mississippian (350-million-years-old) limestones along the valley walls contribute to the scenic character of the Iowa River Greenbelt.

Images provided by AmericanTowns.com, Ticketmaster
Please use "Flag This Place" to alert us about content that is inappropriate or needs immediate attention. Nothing you submit will be shared with other site visitors.

Upcoming AARP Events

View All AARP Events »

AARP Member Card

Join or Renew Today

JOIN FOR JUST $16 A YEAR

  • Immediate access to your member benefits
  • Discounts on travel and everyday savings
  • Subscription to the award-winning AARP The Magazine
  • An ally on the issues that matter most to you in Ackley
  • Free membership for your spouse or partner
JOIN NOW