They were galloping along the beach, when suddenly they came across a very deep stretch of mud. The horses not only got stuck, but began to sink! Thankfully one of the horses wiggled it’s way free from the mud. But the other one, Astro, began to sink deeper and deeper down.Graham had to helplessly watch her beloved horse fall victim to the sinking mud. Nevertheless, Graham grabbed the horses neck and held on for three hours. Then the tide began to rise. Volunteers arrived and all of them tried to free the horse, but to no avail.