Creatures that travel across snow and ice leave signs of their passage, and here are ten different things that might be spotted.

1. Bricks formed from shaped snow and ice.
2. Discarded and torn glove.
3. Parallel marks from runners are slowly being filled in.
4. Patches of snow have been melted and then refrozen.
5. Prints in the snow that are slowly vanishing as more snow fills them in.
6. Rocks, now partially covered in snow and ice, have been arranged in a circle.
7. Several pieces of rubbish are just under the snow and crunch if stepped on.
8. Small hollow in the snow where something has been rested.
9. Snow has been pushed aside into heaps.
10. Spatters of now-frozen blood sit in small pockets where the snow was briefly melted.