Baltarga (or Valltarga) is a village in the municipality of Bellver de Cerdanya located at 1,080 metres (3,540 ft) above sea level on the southern slope of a ridge of the same name, the Serrat de Baltarga.
Sometime between 939 and 943, Ermengol, the eldest son of Sunyer, Count of Barcelona, "died in battle at Baltarga, childless" (apud Baltargam bello interfectus sine filio).
Then, in 1035, Count Berenguer Ramon I of Barcelona "died in battle at Baltarga in Cerdanya" (obiit in bello apud Baltargam locum Ceritaniae).
The parish church is Sant Andreu de Baltarga, originally built in 890.
[1] A painted wood altar frontal is preserved in the Museu Nacional d'Art de Catalunya, while some ceiling frescoes from the arches leading to the apse have been moved to the Museu Diocesà d'Urgell.