Simulated Martian Outpost training at 100,000 feet

With HAPs you can simulate the air pressure and density conditions on Mars by elevating the training outpost to 100,000 feet. Martian Gravity can also be simulated by descending at a constante rate. According to AI: To simulate Martian gravity, the HAPs must have a rate of descent rate of -1,201ft/min(-6.1m/s).

This gives us about 30minutes of both a gravitational as well as a atmospheric environment closely matching Mars. From 100,000 ft to 67,000ft. Or 30km to 20km.