trapped in mud

This was the terrifying moment a brave young mother battled to keep her beloved horse calm as sea water closed in on the animal after he became trapped in mud 'like quicksand'.Exhausted and mud-splattered, Nicole Graham clung to her trapped horse Astro for three hours keeping his head high in a race against the tide.
The 78-stone show horse had sunk into quagmire-like mud and was facing the prospect of drowning as the water rose around them.