This 10-km Hike Near Ottawa Leads To A 1000-Year-Old Hidden Marble Cave

Calling all explorers! If your Ottawa summer bucket list doesn’t have caving on it just yet, you should update it ASAP. This 10-km hike near Ottawa leads to spectacular marble caves, but you’ll have to bring your headlamp. While caving experience isn’t required, you’ll need a real sense of adventure for this trip!