Koli National Park

What the code says

The Grid Point Code for Koli National Park is #PFTTW-M1XRW. It names a cell 2.56 m north to south and 1.55 m east to west, centred on 63°03'26.99"N, 29°53'14.02"E, and it turns back into that cell on any phone or computer by arithmetic alone: no network, no account, no lookup table.

What it is

National park in North Karelia region, Finland

Code

#PFTTW-M1XRW

With a check character

#PFTTW-M1XRW*P

Short form

M1XRW

Cell centre

63.057496, 29.887227

Cell size

2.56 m by 1.55 m

Region

North Karelia

Country

Finland

How to give this address

On a sign, a form or a delivery note

The whole code, #PFTTW-M1XRW. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in North Karelia

Koli National Park M1XRW: a name both people know, then the last five characters. They give back the exact code for anywhere within 4.0 km north or south and 2.4 km east or west of Koli National Park. Further away the same five name somewhere else, which is why the whole code is what goes on a sign.

Copied by hand, or read over a phone

#PFTTW-M1XRW*P. The character on the end catches any single mistyped symbol and any two neighbours swapped.

As a link or a square code

Open it on the map, move to the exact door, and add directions if the code needs help: "blue gate, second floor". The link and the square code carry them. Nothing is kept on this site.

From the city to the door

The first four characters name a cell about 40 km by 24.2 km here. Each one after that picks one of 25 inside the last, so the whole ten name a spot about the size of a doorway.

1. TPFTTMetropolitan area40 km by 24.2 km
2. WPFTTWDistrict8 km by 4.84 km
3. MPFTTWMSuburb1.6 km by 968 m
4. 1PFTTWM1A few streets320 m by 194 m
5. XPFTTWM1XBuilding64 m by 38.7 m
6. RPFTTWM1XREntrance12.8 m by 7.75 m
7. WPFTTWM1XRWDoorway2.56 m by 1.55 m

More in Finland

• Market Square
• Helsinki
• Tampere
• Oulanka National Park