These salt blocks are 100% natural and were mined in the Himalayan Mountains | This rose colored rock salt is renowned for its high mineral content of iron, potassium and magnesium which are vital for equine health | The high density of these pure Himalayan salt licks resist breakage and biting and last longer in weather elements | The purest form of salt available and is safe to be left out for horses to access as desired. Rope (included) can be adjusted to the right height for your horse | Salt blocks help reduce boredom while giving your horse a nourishing electrolyte replenishment