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This compilation of synonyms and selected subsidiary features of Santa María may not be comprehensive. Subsidiary features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. A name that appears in brackets is preceded by its synonym. In some cases additional feature type, location, or elevation details are provided.
| Name | Type | Elevation | Latitude | Longitude |
| SANTA MARIA | Stratovolcano | 3772 m | 14.756°N | 91.552°W |
| Lava dome | ||||
| Synonyms | ||||
| GAGXANUL | ||||
| Cones | ||||
| GALAPAGO, CERRO [LAS MAJADAS] | Stratovolcano | 2572 m | 14.77°N | 91.52°W |
| MAJADAS, LAS | Stratovolcano | 2572 m | 14.77°N | 91.52°W |
| VALLE, VOLCAN DEL | Cinder cone | 3080 m | 14.769°N | 91.542°W |
| Craters | ||||
| BRUJO, EL | Vent | 2500 m | 14.742°N | 91.57°W |
| CALIENTE | Vent | 2500 m | 14.742°N | 91.57°W |
| MITAD, EL | Vent | 2500 m | 14.742°N | 91.57°W |
| MONJE, EL | Vent | 2500 m | 14.742°N | 91.57°W |
| Domes | ||||
| HIJO DEL VOLCAN [SANTIAGUITO] | Dome | 2500 m | 14.742°N | 91.57°W |
| NINO DE JESUS [SANTIAGUITO] | Dome | 2500 m | 14.742°N | 91.57°W |
| SANTIAGO [SANTIAGUITO] | Dome | 2500 m | 14.742°N | 91.57°W |
| SANTIAGUITO | Dome | 2500 m | 14.742°N | 91.57°W |