West Equator
The west equator lies to the left of the North Pole and right of the South Pole. It has a hot climate suitable for only some plants.
The equatorial line itself is marked by a pole extending a short distance above and below ground. The Sunset achievement will be granted the first time one of your Blockheads reaches this pole.
<spoiler>The Sunset Skirt of Happiness can be found at the top of the pole.</spoiler>