theodore roosevelt national park Man spotted crouching among bison at National Park and beckoning them closer The man was visiting Theodore Roosevelt National Park, where a woman was gored by a bison earlier this summer Tourists are ruining the amazing 'cannonballs' at Theodore Roosevelt National Park Not a single one of the cannonball concretions is free from graffiti, and it's speeding up their erosion Advnture NewsletterAll the latest inspiration, tips and guides to help you plan your next Advnture!Contact me with news and offers from other Future brandsReceive email from us on behalf of our trusted partners or sponsors MOST READ1Osprey Talon Velocity 20 review: a versatile daypack for hikers and runners2How to choose a travel yoga mat for your next active adventure3Going festival camping this summer? Aldi is selling tents for £17.99 – here's when you can grab one4Jack Wolfskin Moonrise 3-in-1 jacket: A versatile waterproof that gets the job done in an understated way5Inov8 Bare-XF barefoot running shoes review: feel the train in luxurious comfort