Im not sure what your thinking about, but the local airports in my area all have landing beacons taller than the surrounding trees, and they end within 50 yards of the runway. When Charles Lindberg took off on his famous Atlantic crossing, his plane barely cleared the power lines and trees at the end of the runway. In a theater of war you build your runway where is is needed and can be done quicly enough....if that means its in a slight bowl, they so be it.
No its not perfect, but it happens