The most remarkable change in the Spanish poetry of the late 20th century was realized by the poets of the Generation of the ’70, also called “Novisimos”. The anthology of Jose Maria Castellet Nueve novisimos poetas espanoles, published in 1970, was considered as a manifesto of irruption of this new generation. Juan Luis Panero was born in Madrid in 1942 and published his first collection of poems, A traves del tiempo, in 1968. Both the date of birth and the date of his first publishing locate him in the group of Novisimos, that is to say, the Generation of the ’70. However Panero’s A traves del tiempo couldn’t attract attention of the critics, who received with enthusiasm the works of other poets of his generation. The reason Panero’s poems went almost unnoticed is that they were considered as a prolongation of realist tendency of former generation. But a detailed analysis of A traves del tiempo shows us that it’s a book based on a world vision completely different from that of social realism, the most important trend during the ’50s and ’60s. For this reason, Juan Luis Panero is to be considered one of the ‘legitimate’ member of the Generation of the ’70s, looking for new horizons of poetic creation. Besides, also can be found in the verses of Panero the use of “culturalism”, a frequent rhetoric device in the poems of “Novisimos”. It is one more reason why Panero is to be intergrated properly into that generation.