Arenal Volcano

What the code says

The Grid Point Code for Arenal Volcano is #GLP12-6GP3J. It names a cell 2.56 m north to south and 3.36 m east to west, centred on 10°27'45.00"N, 84°42'11.95"W, 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

Active stratovolcano in Alajuela Province, Costa Rica

Code

#GLP12-6GP3J

With a check character

#GLP12-6GP3J*X

Short form

6GP3J

Cell centre

10.462499, -84.703319

Cell size

2.56 m by 3.36 m

Region

Alajuela Province

Country

Costa Rica

How to give this address

On a sign, a form or a delivery note

The whole code, #GLP12-6GP3J. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Alajuela Province

Arenal Volcano 6GP3J: 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 5.3 km east or west of Arenal Volcano. 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

#GLP12-6GP3J*X. 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 52.5 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. 1GLP1Metropolitan area40 km by 52.5 km
2. 2GLP12District8 km by 10.5 km
3. 6GLP126Suburb1.6 km by 2.1 km
4. GGLP126GA few streets320 m by 420 m
5. PGLP126GPBuilding64 m by 84.1 m
6. 3GLP126GP3Entrance12.8 m by 16.8 m
7. JGLP126GP3JDoorway2.56 m by 3.36 m

More in Costa Rica

• San José Central Market
• San José
• Irazú Volcano
• Manuel Antonio National Park