Elsewhere Mandelstam connects poetry to recall.  Here it is a time-turning plough, bringing the deepest layers of time to the surface. And, you could add, enriching the present by turning it over with old soil, aerating both.

‘Poetry is the plow that turns up time so that the deep layers of time, the black soil, appear on top.’

Source: Mandelstam’s ‘The Word and Culture’, quoted in Osip Mandelstam, Journey to Armenia (London: Notting Hill Editions, 2011), p. 36

Photo credits: Stux, pixabay.com; Hans, pixabay.com; Zbysiu Rodak, unsplash.com