"Day 12: Draw a pony exploring a place lost to legend/Draw a pony off the beaten path.
Consider this a sequel to the Day 3 prompt. Lilly and Icy have managed to find the entrance to Glaciana, the home of the Polar SeaPonies. Legend has it that this glacier's interior was carved into a wonderful city by the original Polar SeaPonies. The polar hippogriffs use to migrate here every winter to avoid the ruthless and harsh winter weather, but that all changed when the Ziphius appeared. It was simply too dangerous to stay in Glaciana, and the polar hippogriffs were forced to abandon it.
But even so, Icy still wanted to show her new friend this magical place, and hopes that one day her kind can return to it. But even so, they still have to be weary of the Ziphius, for it lurks at every turn!"