D&D General Piecing together the official maps of the Mortal World of Nerath

[Dungeonosophy]

Next step: I measured the East-West length of the top half of the island of Kelarnil on the Known Regions (KR) map, and also on the Mortal World map. I also measured where the centerline (the proposed Prime Meridian) runs through Kelarnil on the KR map...it doesn't equally bisect the island when viewing only the top half. 58% of the (top half of the) island is west of the Meridian, and 42% of the (top half of the) island is east of the Meridian. (See the previously posted maps to see how the the Meridian transects Kelarnil.)

Then I rotated the Mortal World globe so that the Meridian line on the Mortal World map would run through Kelarnil at the same ratio:

 

[Dungeonosophy]

Step 2: I measured on the Known Regions map how many pixels it is from the easternmost promontory of Kelarnil to the east edge of the map. And also from the westernmost promontory of Kelarnil to the western edge of the map.

And then used this ratio to count the pixels along the round equatorial edge of the Mortal World map.

Now we know how much of the "pie" the KR map takes up East-to-West. (How far the Known Regions map extends north is the next quesetion.)

 

[Rabulias]

Note, on Earth, the distance of 10° latitude is roughly 70 miles.

Uh, 10 degrees of latitude on Earth is approximately 700 miles. The Earth's circumference is about 24,901 miles.

24,901/4 = 6,225.25 miles from Equator to pole.

6,225.25/90 degrees = 69.169 miles per degree.

So, 70 to 20 is 50 degrees or 3500 miles.

You got this right, so I think the above quote is just a typo?

 

[Zeromaru X]

So, how small is The World compared to Earth? Perhaps Mars-sized?

 

[Dungeonosophy]

Now we know how much of the "pie" the KR map takes up East-to-West. (How far the Known Regions map extends north is the next quesetion.)

P.S. This solution assumes that Kelarnil is depicted correctly size-wise on the Mortal World map. But this results in there being "too much" land along the western edge of the pie, at the equator. Which could be fine, since the Known Region details will trump the cartoonish vague outlines of the Mortal World illo. The exact details of the continental shapes will need to be somewhat redrawn to match the KR map anyway.

However, another approach would be to assume that the E-W width of the sea at the equator is correct. In this case, the pie wedge will be a good deal smaller. And the island of Kelarnil will be reduced in size on the Mortal World illo.

 

[Dungeonosophy]

So, how small is The World compared to Earth? Perhaps Mars-sized?

Don’t know yet. Since we don’t yet know what latitudes the scale bars are located (on Nentir Vale, Elsir Vale, and Stonehome Mtns maps). Working on it.

 

[Yaarel]

Here's your 60N-60S proposal:

This looks about right.

So there is over half of the planet still unmapped.

Where the north-south is about 1300 miles, at about 60° each, the circumference is about 3900 miles around.

Compare Earth about 24,900 miles around.

The moon is roughly 6800 miles around.

Pluto is roughly 4600 miles around.

 

[GreyLord]

This looks about right.

So there is over half of the planet still unmapped.

Where the north-south is about 1300 miles, at about 60° each, the circumference is about 3900 miles around.

Compare Earth about 24,900 miles around.

The moon is roughly 6800 miles around.

Pluto is roughly 4600 miles around.

Maybe it has a very, very, very dense core made up of Uranium mixed with even heavier elements in a very solid mix???

 

[Yaarel]

Maybe it has a very, very, very dense core made up of Uranium mixed with even heavier elements in a very solid mix???

Heh, I think it is more plausible if "a wizard did it".

I am seeing some kind of ethereal plane anomaly in the core of the planetoid.

I view the positive ethereal as feywild, and negative ethereal as shadowfell, meanwhile elemental ether as force, along with the four elemental states.

Any of these etherealities might be doing something odd in the core.

I know the Mortal planet has lore about aberrations deep in the underdark of the planet crust. But I associate the farrealm with astral thoughts, the thoughts that were rejected by the construction of reality. Thus the farrealm feels less about gravity.

Gravity itself is made out of the element of ether.

 

[Zeromaru X]

The thing is, "ether" doesn't exist in the 4e cosmology. There is no Ethereal Plane in the World Axis. So, if you say to a sage in the Nentir Vale that there is some ethereal stuff doing "gravity" and whatnot, they are going to look at you and think you're nuts.

Your theory has some merit, though. The Far Realm is located beyond the Astra Sea, while the Elemental Chaos has something different (a plane of pure order) in contraposition to the Far Realm.

Another potential explanation to gravity can be the gods themselves. They gave The World "permanency", and element utterly alien to the primordials and their chaotic creations. So, it's possible that the world maintains a sense of balance because of that element of "permanency" that the gods gave to The World.