Letter: Letters: Wrong island

From ALISTAIR BECK

A tunnel between Japan’s north and south islands would be considerably
more than ‘four kilometres longer than the Channel Tunnel’ (Feedback, 16
April).

There is a tunnel of the length you suggest between Honshu and Hokkaido,
which you could reasonably call the central and north islands of the country
(although a lot of Japanese will give you arguments that there are Japanese
islands still further north than Hokkaido).

Scaling from my atlas, a tunnel from the south island (Kyushu) to the
north island (Hokkaido) would have to be about 800 kilometres long.

Alistair Beck Montreal, Canada