Rosh HaNikra grottoes

What the code says

The Grid Point Code for Rosh HaNikra grottoes is #J79KX-KWN88. It names a cell 2.56 m north to south and 2.86 m east to west, centred on 33°05'35.25"N, 35°06'17.18"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

Geologic formation in northern Israel; white chalk cliff face which opens up into spectacular grottos

Code

#J79KX-KWN88

With a check character

#J79KX-KWN88*J

Short form

KWN88

Cell centre

33.093124, 35.104773

Cell size

2.56 m by 2.86 m

Region

Northern District

Country

Israel

How to give this address

On a sign, a form or a delivery note

The whole code, #J79KX-KWN88. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Northern District

Rosh HaNikra grottoes KWN88: 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 4.5 km east or west of Rosh HaNikra grottoes. 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

#J79KX-KWN88*J. 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 44.8 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. KJ79KMetropolitan area40 km by 44.8 km
2. XJ79KXDistrict8 km by 8.95 km
3. KJ79KXKSuburb1.6 km by 1.79 km
4. WJ79KXKWA few streets320 m by 358 m
5. NJ79KXKWNBuilding64 m by 71.6 m
6. 8J79KXKWN8Entrance12.8 m by 14.3 m
7. 8J79KXKWN88Doorway2.56 m by 2.86 m

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