Gravel

Gravel is a naturally occurring block mostly found below ground. When mined it has a 1/5 chance to yield 1 Flint. Gravel also obeys gravity. However, after Update 0.9.0 Gravel no longer falls unless a block is placed or destroyed near it.

Trivia

 * Rarely, large quantities of gravel can be generated above ground and on large bodies of water like the ocean.
 * Gravel used to be the "roads" in Villages. This was replaced by Grass Paths in 0.11.0
 * Since gravel can yield flint, it is possible to "farm" gravel for it.
 * Gravel breaks upon falling on Torches, flowers, Saplings, and other non-solid blocks, but will not drop flint.
 * Before 0.8.0, Gravel looked like Gravel-Pre_12w21a.png this.
 * Version Exclusive: Collapsing releases particles in Pocket Edition.
 * Version Exclusive: Naturally Generated Gravel doesn't collapse when mined using a Silk Touch Enchanted Pickaxe.