The Trinity River Park concept, unveiled by Mayor Mike Rawlings last May, encompasses more than 285 acres of land near the heart of downtown Dallas. The concept — more than 50 times larger than Klyde Warren Park — envisions a new naturalized river landscape that is ever-changing with miles of pathways and trails within the levees, and includes sites for five elevated parks that will extend from inside the levees into the adjacent communities, according to a release....