This is a pretty impressive site! The park is actually really in Great Falls, following the cataracts output downriver. The trails are great, paved for those whom can't navigate the terrain or cyclists closer to the venue. After that, over hill and vale, you are on your own. We loved the many viewpoints, and even the signs asking visitors to help with invasive flora. The vast array of plants was amazing, and coupled with the Lewis and Clark Interpretive Center, we could identify most. One minor glitch we ran in to is the signage. The fish hatchery and Giant springs signs are there but there really don't indicate that the Giant Springs are in the same site as the fish hatchery. We hiked quite aways downsteam only to come back up and then find out where the springs actually were. However, they are a sight to behold! Absolutely amazing. That much water pulsing from the ground, and has been for hundreds of years. The plants in the pools around the springs were amazingly green, with nothing but crystal clear water around them. Whom would have thought that 150 million gallons of water per day were the nominal output of these springs!