Esker

Esker is one of the off world explorers.

Appearance
Esker is the only explorer without a space suit, he looks like the average Hearthian, 4 eyes, blue skin and simple, hearthian clothing. He is also wearing a wide brimmed hat that is presumably made of leather.

Instrument and Unique Features
Esker has no instrument, as he whistles, but his whistling can still be picked up by the Signalscope. This should make him relatively easy to find, he is in the centre of the Attlerock in a crater filled with trees, pretty hard to miss. As for unique features, he is sitting in a sophisticated chair from the more recent ships and is the only Hearthian to have set up permanent residence

Discussions
Esker tells you that the best place to use your Signalscope is up in the north pole and gives you starting hints that should be easy enough to follow and track. He is generally the first explorer you should go to for this reason (also as the Attlerock is probably the first planet you should explore other than Timber Hearth.)