Our second major project this year was the construction of a flagstone terrace at Pictured Rocks Park, in Jones County, Iowa. This was Trail Crew's second project at this site, as last year's crew helped build an ADA (Americans with Disabilities Act) approved trail for persons who require the use of a wheelchair. Both projects have been created primarily to accommodate visitors to the nearby Camp Courageous of Iowa. Camp Courageous provides recreation and respite care to individuals with special needs, including outdoor recreation for those with limited mobility. The trail that had been previously constructed allows such individuals to easily visit a nearby cave, and our goal for this latest project was to enhance this trail by creating a stone terrace at the beginning of the trail. This terrace will serve as a comfortable and aesthetically pleasing staging area for those preparing to embark upon the trail, and also includes educational signs about notable features in the surrounding area.
Our first day was spent preparing our work site by leveling the ground upon which the terrace would be built, and then placing a smooth base of gravel to allow for proper rainwater drainage.
The site where we constructed our terrace. The ground has been leveled and the gravel base is about to be graded.
We also made minor repairs to the trail, and assisted a fellow DNR work crew with the construction of a pavilion only meters from the terrace. We did this primarily by constructing a small limestone retaining wall. Limestone blocks were cut squarely to fit those adjacent to them, then set in place with rebar.
Ewan cutting limestone for the retaining wall
Ceith cutting rebar to hold the retaining wall
Delilah shows off our completed retaining wall
The remainder of our two weeks at Pictured Rocks Park was spent constructing the flagstone terrace itself. This was a long and involved process, in which each stone was meticulously hand cut to fit those adjacent to it with minimal gap between them. It was accomplished by placing the edge of one flagstone upon the edge of another, so that they overlapped a small amount. A gas powered saw was then used to cut through the overlap, creating matching edges that fit snugly together.
JB, Delilah and Adam cutting flagstone for the stone terrace (note the visible overlap technique mentioned above)
Once the stones were cut to fit, the gravel base upon which they were placed was adjusted to eliminate any wobbling and to ensure that each stone was level with those adjacent to it. The gaps between stones were then packed with sandy filler, providing further stability. Sign posts were placed in the ground, and two limestone benches were constructed within the terrace. Finally, a single course retaining wall was constructed in the same manner as earlier and the adjoining trail was elevated and re-graded to match the terrace.
While the work required for this project was taxing and tedious, the project itself was a very rewarding experience. The number of hikers and climbers passing us as we worked indicated that the terrace would likely see a satisfying amount of use. In addition, knowing that Camp Courageous would be able to utilize our terrace revealed to me just how diverse the people are that benefit from the work of the Trail Crew and the enrichment of our state parks.