There's a reward at the top of this jewel of a park: A view of the Arkansas River and West Little Rock from Big Rock Mountain. But unlike Knoop Park's route to a vista, it's not a walk in the park to get to the top. It's a climb, in some places over loose rocks, a steep four-mile hike for the physically fit, or folks who travel with a sherpa. At the top, the trail follows the edge of Fort Roots before dipping (if you are traveling west) into forest; there are super views all along the way. Access to the Emerald Park trail is from the River Trail, the paved bicycle/hiking path that connects Little Rock and North Little Rock via the Big Dam Bridge.