Sponsor content by The Marriott Bonvoy Boundless™ Card from Chase Jenna makes her way to Chattanooga, Tennessee, in the third episode of Season US to experience Ruby Falls. Sitting below the surface of the city’s historic Lookout Mountain, it’s known as the country’s tallest — and deepest — waterfall open to the public. Learn more about The Marriott Bonvoy Boundless™ Card from Chase: https://bit.ly/3H9sZeC Watch more episodes of Travel Dares:    • Travel Dares   To book a tour at Ruby Falls, visit https://www.rubyfalls.com/ticketing ------------------------------------------------------ #Insider #TravelDares #Waterfall Insider is great journalism about what passionate people actually want to know. That’s everything from news to food, celebrity to science, politics to sports and all the rest. It’s smart. It’s fearless. It’s fun. We push the boundaries of digital storytelling. Our mission is to inform and inspire. Subscribe to our channel and visit us at: https://www.insider.com/ Insider on Facebook: https://www.facebook.com/insider/ Insider on Instagram: https://www.instagram.com/insider/ Insider on Twitter: https://twitter.com/thisisinsider Insider on Snapchat: https://www.snapchat.com/discover/Insider/4020934530 Movies Insider on Snapchat: https://www.snapchat.com/discover/Movies_Insider/9616609930 Insider on TikTok: https://www.tiktok.com/@insider Chasing An Underground Waterfall | Travel Dares Season US E3