Minecraft wiki entry for Things_not_to_do, associated text: Heights are dangerous, and jumping off a structure, especially without knowing how tall it is, can result in death. A risky method would be to place a water bucket just before the player lands; this is colloquially called MLG (major league gaming) water bucketing. It is much safer to descend mountains or cliffs by climbing down normally or even using water. However, this strategy does not work in the Nether, which can catch newer players by surprise. Make sure to be especially careful on Amplified worlds, which are vertical, as even netherite armor with Protection and Feather Falling may not reduce enough damage to survive enormous falls. Death at the bottom may make it impossible to reach the items scattered everywhere. Riding off of a cliff in a Boat can also negate fall damage, although due to a bug in Java Edition, there are a few specific heights where this fails.[1]