Pronunciation guide to Surface Features on Mars:

Aeolis eye-OH-lis
Aeria AIR-ee-uh
Aetheria eye-THEE-ree-uh
Aethiopis eye-THEE-oh-pus
Amazonis A-muh-ZAHN-is
Arcadia ar-KAY-dee-uh
Argyre AIR-jir
Chryse KRY-see
Cimmerium sim-AIR-ee-um
Cydonia sy-DOHN-ee-ah
Dia DIA-ah
Diacria die-ah-KREE-ah
Electris ee-LEK-tris
Elysium ih-LEE-zee-um
Eridania eh-rid-AH-nee-ah
Erythraeum air-ih-THRY-um
Hellas HELL-us
Hesperia hes-PAIR-ee-ah
Iapygia yah-PIE-jee-ah
Lacus LAH-kus
Meridiani mair-id-ee-AH-nee
Mesogaea mess-oh-GUY-ah
Ogygis oh-JEE-jis
Oxia OX-ee-ah
Sabaeus sa-BYE-us
Solis SOH-lis
Syrtis SEAR-tis
Tharsis THAR-sis
Tyrrhenum tir-REEN-um
Zephyria zef-EAR-ee-ah