This Himalayan Salt Block is designed to fit in to a traditional salt block holder. Mined from the vast and ancient Himalayan mountains, the distinctive rose pink color comes from the salts high mineral content, such as iron, potassium and magnesium, which are all vital for maintaining health. Himalayan rock salt licks are literally 'rock hard, this means that horses, ponies, deer, and livestock are unable to bite chunks off the block, a problem that can occur with the softer pressed salt licks. These licks are also much more weather resistant, which means they can be safely left outside in the field for horse to self dose. Our experience has shown that horses do prefer these to other salt licks.