[4]: 325  The main summits, Cerro Calajalata and a second subsidiary mountain form a northeast-southwest trending ridge.

[8] According to a 1996 map, both Arintica and its subsidiary peak Cerro Calajalata to the southwest featured a permanent snow/ice cover.

[9] Arintica and Pukintika form the drainage divide between the Salar de Surire and the Lauca River basin; the southern flanks drain into the Salar de Surire[2]: 217  and the northern sides through the Rio Paquisa into the Lauca River.

[10] The volcano was constructed in two phases and postglacial lava flows have been found by Landsat imagery, but they are unsampled.

The natural monument features the breeding sites of several flamingo species and internationally important wetlands, which are listed in the Ramsar Convention.