Gravel

Gravel is an uncommon type of block that is affected by gravity.

Obtaining
Gravel can be broken using any tool, but a shovel is the quickest. When broken, it has a 10% chance of dropping flint instead of the gravel itself. The flint received can be controlled with enchantments. Silk touch removes the chance of dropping flint. Fortune increases the chance to 14% at level I, 25% at level II, and 100% at level III.

If gravel falls onto a non-full block, it will drop as an item, and not drop flint.

Natural generation
Gravel is typically found underwater, deep underground in veins of up to 33 blocks, on beaches, in village pathways, and in the Nether. It is generated at a rate of approximately 3.29% that of stone between layers 1 and 111.

In the Nether, gravel generates naturally between Y=63 and Y=65 in one-block-deep layers. It may generate without a block below it, in which case it will fall when updated.

Usage
Gravel, if there is no block below it, will fall until it lands on the next available block. When gravel is being affected by gravity and falling, it exhibits a smooth falling animation.

If gravel lands on a mob or the player and covers their head, it will suffocate them until they destroy the block, move out of the block or die. If falling gravel lands in the space occupied by a non-solid block, (such as torches, slabs, rails, or redstone) or soulsand, it will break and turn into a gravel item. If it falls onto a cobweb it will slowly fall until it has gone through it completely, or until it touches the ground, at which point it will drop and turn into a gravel item.

Gravel can be placed on a non-solid block without falling.

Trading
Fletcher villagers will buy 10 blocks of gravel and an emerald for 6–10 flint.

Trivia

 * TNT explosions will launch falling gravel.
 * If gravel falls into a cobweb, it will be slowed down and then converted to an item.
 * If a player is standing on a stack of sand or gravel, and the stack falls on a non-solid block, the player will fall fast enough to take damage or even die.
 * Gravel will often fall into caves making a mock dead end. Thus, if a player encounters a gravel dead-end while mining, removing the gravel may reveal additional passageways.
 * Because of the ability to reset the Nether in the console edition, gravel is renewable in it, if not considered cheating.

Gallery
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