Two superb triologisms in a few lines of Larkin – I like his wedge-shadowed gardens and then the Brontean empyrean which follows. 

I part thick curtains, and am startled by

The rapid clouds, the moon’s cleanliness.

Four o’clock: wedge-shadowed gardens lie 

Under a cavernous, a wind-picked sky.

From ‘Sad Steps’ which can be read here. 

Source: Seamus Heaney, Finders Keepers: Selected prose 1971-2001 (London: Faber and Faber, 2003), p. 147