ELIZABETHTON â The Elizabethton Parks and Recreation Department has begun the expansion of its mountain bike trail from the Hampton Springs watershed to property the city is leasing in the adjacent Doe River Gorge. The Elizabethton department calls it an expansion of âone of the most scenic biking and hiking trail facilities in our region.â The flagging of the new route has already begun. The department said it is receiving assistance and funding support from Southern Off-Road Bicycle Association, or SORBA, of the Tri-Cities. That assistance has included SORBA volunteers donating man-hours to clear the way through the dense vegetation for trail designer Randy OâConner to specifically identify the direction of the new trails.