Upside down!

ɯoɔ˙ǝlʇıʇdılɟ//:dʇʇɥ

¡¡noʎ ɟo ǝɯos uıɐʇɹǝʇuǝ llıʍ ʇı ʇqnop ou ʇnq - ʇɐɥʇ oʇ ǝɯoɔ 'llɐ ʇɐ ǝsodɹnd lnɟǝsn ʎuɐ ɹo ˙˙˙ǝsodɹnd lɐɔıɥdɐɹƃoǝƃ lnɟǝsn ʎuɐ sɐɥ sıɥʇ ʇɐɥʇ ǝɹns ʇou ɯɐ ı

"The Sistine Chapel of Crystals..."

Where in the world is this? And what's going on?

(Photo: The Telegraph)

Another reason why Geography's great... (as if you needed any more!)

...if you know roughly where someone lives, but have lost their address, you can draw a sketch map on the envelope of your Christmas card to them...

That's what Peter O'Leary's former colleague did - and the Royal Mail managed to deliver the card in 9 days! Click on the picture for the BBC story.

Apparently, other people have sent mail just with an OS grid reference, and there is even a book by a woman who sent 130 letters with disguised addresses and puzzles for the postman on the envelopes... Of 130 letters, 120 of them reached their destinations!

The Royal Mail have a special warehouse for "undeliverable" mail, and 300 staff "leave no stone unturned" in their quest to get it to where it should be!

Oh dear, oh dear, oh dear!

My sister has just sent me this article which is much more interesting than marking coursework (sorry Yr11!): Which tube line runs to Edinburgh?

The question about building Windsor Castle in the flightpath of Heathrow reminded me of a website I found yesterday while planning Yr9 lessons (and unfortunately I didn't save) - which asked "Why do so many volcanoes occur in densely populated areas?"