Greetings and slow mutations!

My name is Jason and I am in the middle of a project the size of a planet with a smaller planet inside of it. Literally! I’m building a hollow world for a fantasy role-playing game and novel series that I am creating. After several google searches, a couple of misguided attempts at going it alone, and a broken ruler, I found the Cartographers Guild.

Let me tell you about my project. It is called Other World. That is a working title. It’s similar to Earth, but contains a more primordial land within the hollow center. It is similar to Mystara from the Original D&D campaign guides. My game and book series, though, is world-spanning and is more of a culmination of all those OD&D guides built into one.

Don’t think that I’m just going to plagiarize the Mystara map, because that couldn’t be further from the truth. In fact, I plan to make an entire planet fresh from an old drawing I have (inside and out). Not just an entire planet, but a detailed entire planet the size of the Earth (give or take). I’m hoping to detail it down to the League (3 miles) per 1 inch hex. Oh, and don’t worry, the entire thing will be cut down into an icosahedron (cutting the sphere of the planet into twenty triangular parts for the inside and outside with the far northern and southern 5 on each being cut off for the curve to connect the two.

If anyone can suggest a good program for me to make out the detailed maps, hopefully with an overlay so I can make geo-political markings and lines, I would be grateful. As high detailed as possible. I don’t need to do individual cities, but do want them pinpointed on the map. Later, I’ll be detailing the larger cities, primary locations, and dungeons.

Any suggestions?