There is a 22 mile paved path called the Campion Trail in North Texas. (much of it in Irving TX.) It is primarily built on overflow land adjacent to the three branches of the Trinity River. Their is much old growth forrest and fields left in their natural state and rampant with wild flowers this time of year...... I only had a few extra minuets today but I grabbed a shot of a tributary to the Elm fork of the Trinity on my way home....