That allows the guides to act more as supervisors.
And guides won't be the only ones supervising climbers. Adventures on the Gorge also built a "heckle deck" that offers a view of the whole course, connected to The Rendezvous Bar.
Arnold said the climbers would provide plenty of entertainment for diners.
"We fully expect there will be 70 people out here on a Saturday eating a sandwich and drinking a beer, he said.
Adventures on the Gorge started planning TimberTrek about a year ago. Arnold said he discovered adventure courses on the Internet. They originated in France, and there are now about 1,000 adventure parks in that country, plus thousands more across the rest of Europe.
Arnold also learned that TimberTrek would be one of only four adventure parks in the eastern United States. He and Elliott visited a few of those parks to see if it would be a good fit for the New River Gorge.
"As soon as we visited the one in New York, we said, 'We've got to have one of these,' " Elliott said.
Arnold said they discovered a park would be a natural progression from the company's popular zip line tours. It also would allow Adventures on the Gorge to reach a new group of customers.
Adventures on the Gorge has plenty of activities for children - 6-year-olds can raft some areas of the New River with adult accompaniment - but no activities children can do alone.
Until now. Children 7 and up can climb TimberTrek's yellow course all by themselves.
"This is a perfect thing for schools to do," Elliott said.
Construction on TimberTrek started in November and took three months. Arnold said the recent mild winter allowed workers to complete the project much faster than expected.
Although the park will open next month, TimberTrek may never be finished: Arnold said the company could easily add additional elements and courses if the park becomes popular with guests.
"I wouldn't be surprised if we have 24 new elements next year," he said.
The company is currently allowing its river guides and their families to test the course before it opens to the public. They're giving it rave reviews.
TimberTrek will see its soft opening on April 1, with a grand opening in May.
Guests will pay $79 for three hours in the park. Elliott said large groups could negotiate cheaper rates.