When terrain slopes up from the runway threshold, the pilot will feel like*

When the terrain slopes up from the runway threshold, the pilot may feel like they are higher than they actually are. This is because the sloping terrain can create an optical illusion, making the runway appear further away or at a different angle than it actually is. This can potentially lead to the pilot flaring too early or too high, which can cause a hard landing or even a stall. Therefore, it's important for pilots to be aware of this and adjust their approach accordingly.