Photo of Nicholas Hagger looking at a rainbow in Cornwall, 18.2.1992. Soon afterwards he wrote 'Rainbow' (Collected Poems, p.642).

From Collected Poems p.642.

RAINBOW
A rainbow in the sky
And fine rain on my face
And a sea mist creeps in
So appearances are space.

Half a rainbow in my mind
From on high down to my head
And the real crock of gold
We can find before we’re dead.

The rainbow comes and goes,
Manifests and disappears, 10
As nothing takes a shape,
A vision behind the years.

A rainbow is an arch
That bridges heaven and earth
And connects my sea-wet cheeks
To an unseen world of worth
18 February 1992