The title of this poetry collection is a play on words; agog means rapt with attention but there is also a Gog - the name for someone who comes from North Wales in the same way as Taff is often applied to those from South Wales. These poems are redolent of North Wales but from the point of view of what it is really like to live there. So yes there are mountains but also 
 ...see beautiful Gwenno's long black jackdaw hair and dark eyes deep as the dog lakes on Cnicht; see Gwenno's pale Snowdon lily skin shining white as death; see her full lips painted red as a dragon's tongue; see Gwenno in the square in Llanrwst tottering on heels higher than the mountain she lives on... 
 So the poems are playful as well as serious and come in a variety of voices Welsh and English. Marshall uses different techniques to good effect; found poetry and concrete poetry which I can't reproduce in this review so I recommend you read the book for yourself.