We are in our late fiftes - an active couple, still in relative good shape. I am scared of heights and immediately regretted booking this tour. All vital signs - BP, heart rate, etc. were elevated as we drove off-the-beaten road to their head quarters. Lovely drive actually! Registration was simple and fast and we were to the first ride quickly. OK first zip; that lessened the adrenaline slightly but the zip lines became longer and higher. After a fun 5 second zip into a refreshing spring fed pool, we escorted to the Grand Finale. Launch from a 50 foot tower (again the height neurosis kicked in), strapped in like superman down a 3/4 mile ride at speeds up to 45 mph and stopped by a mechanical device. Sometimes you just have to trust in the calculus of the engineers who design these things. What a truly fantastic experience. The guides Rachel and Dillon were fantastic with John assisting during his training. We were well cared for. I HIGHLY recommend this specific tour and will be a repeat customer.