[Scrooge took the time to make a few different maps, before moving over to the old trunk for a more thorough investigation of it. The wood was worn, and there were cracks in the sides. It did appear to be empty... good. If there had been anything inside it they would have had to empty the contents first before moving it]

Even a dangerous animal could attract the most ambitious of hunter, lass. [Though it would be a good deterrent for most people. He puzzled over it, trying to see if he could come up with anything better. He agreed that it should be something subtle. Something that would blend into the landscape.] Not to mention that if the footprint is too unusual it might arouse a visitors curiosity. [Then inspiration happened to crawl by his line of vision] I've got it! These salamanders make their home here, and aren't likely to be sought out by anyone. We can simply alter our "footprints" to be missing a specific toe to differentiate them from all the others!