Letters to Antonio Machado

Antonio Machado (26 July 1875 – 22 February 1939) was a well-known Spanish poet in the 20th century and a leading cultural figure. When the Spanish Civil War broke out in July 1936, Machado had to move from Madrid with his elderly mother, and eventually across the French border to Collioure. It was here that Antonio Machado died, just three days before his mother. In his pocket was found his last poem.

Machado is buried in the little village of Collioure and his grave is visited every year for lots of people. I was there last summer, even if visiting cemeteries isn't a habit of mine. It seems that there are always fresh flowers, and poems, and... letters. The box on the tomb caught my attention. Because... Who pick up the letters addressed to Machado?

Update 4 Feb. 2019: About the man who put the mailbox [in Catalan]