Name Type coordinates Feature diameter (km) Peak elevation (km) Aeolis [ a] mons 5°05′S 137°51′E / 5.08°S 137.85°E / -5.08; 137.85 (Mount Sharp ) 89 5.5 Alba mons[ b] 41°06′N 249°18′E / 41.1°N 249.3°E / 41.1; 249.3 (Alba Mons ) 548 6.8 Albor tholus 18°52′N 150°28′E / 18.87°N 150.47°E / 18.87; 150.47 (Albor Tholus ) 170 4.5 Anseris mons 29°49′S 86°39′E / 29.81°S 86.65°E / -29.81; 86.65 (Anseris Mons ) 58 4.2 Aonia mons 53°18′N 272°06′E / 53.3°N 272.1°E / 53.3; 272.1 (Aonia Mons ) 27 Aonia tholus 59°00′S 280°00′E / 59.0°S 280.0°E / -59.0; 280.0 (Aonia Tholus ) 54 Apollinaris mons[ c] 9°12′S 174°48′E / 9.2°S 174.8°E / -9.2; 174.8 (Apollinaris Mons ) 275 5.0 Apollinaris tholus 64°00′S 175°45′E / 64°S 175.75°E / -64; 175.75 (Apollinaris Tholus ) 33 3.2 Argyre mons 50°24′S 311°54′E / 50.4°S 311.9°E / -50.4; 311.9 (Argyre Mons ) 61 Arsia mons 8°24′S 239°55′E / 8.4°S 239.91°E / -8.4; 239.91 (Arsia Mons ) 475 20.0 Ascraeus mons 11°55′N 255°55′E / 11.92°N 255.92°E / 11.92; 255.92 (Ascraeus Mons ) 460 18.2 Ausonia montes 25°25′S 99°02′E / 25.42°S 99.04°E / -25.42; 99.04 (Ausonia Montes ) 158 1.4 Australe montes 80°11′S 14°03′E / 80.19°S 14.05°E / -80.19; 14.05 (Australe Montes ) 387 5.0 Biblis tholus[ d] 2°30′N 235°36′E / 2.5°N 235.6°E / 2.5; 235.6 (Biblis Tholus ) 169 3.0 Centauri montes 38°40′S 95°31′E / 38.67°S 95.52°E / -38.67; 95.52 (Centauri Montes ) 270 1.4 Ceraunius tholus 24°15′N 262°45′E / 24.25°N 262.75°E / 24.25; 262.75 (Ceraunius Tholus ) 130 7.5 Cerberus tholi 4°30′N 164°24′E / 4.5°N 164.4°E / 4.5; 164.4 (Cerberus Tholi ) 698 Chalce montes 53°43′S 322°21′E / 53.72°S 322.35°E / -53.72; 322.35 (Chalce Montes ) 95 2.3 Charitum montes 58°06′S 319°43′E / 58.1°S 319.71°E / -58.1; 319.71 (Charitum Montes ) 850 2.5 Chronius mons 61°30′S 178°00′E / 61.5°S 178.0°E / -61.5; 178.0 (Chronius Mons ) 56 Coprates montes 13°00′S 294°36′E / 13°S 294.6°E / -13; 294.6 (Coprates Montes ) 350 Coronae montes 34°19′S 86°07′E / 34.31°S 86.11°E / -34.31; 86.11 (Coronae Montes ) 236 Echus montes 7°49′N 282°03′E / 7.81°N 282.05°E / 7.81; 282.05 (Echus Montes ) 395 Electris mons 45°42′S 152°42′E / 45.7°S 152.7°E / -45.7; 152.7 (Electris Mons ) 105 Eridania mons 57°00′S 137°54′E / 57.0°S 137.9°E / -57.0; 137.9 (Eridania Mons ) 143 Elysium mons 25°01′N 147°13′E / 25.02°N 147.21°E / 25.02; 147.21 (Elysium Mons ) 410 13.9 Erebus montes 35°40′N 185°12′E / 35.66°N 185.2°E / 35.66; 185.2 (Erebus Montes ) 785 Euripus mons 44°49′S 105°11′E / 44.82°S 105.18°E / -44.82; 105.18 (Euripus Mons ) 91 4.5 Galaxius mons 34°46′N 142°19′E / 34.76°N 142.31°E / 34.76; 142.31 (Galaxius Mons ) 22 Gervon montes 7°43′S 278°23′E / 7.72°S 278.38°E / -7.72; 278.38 (Geryon Montes ) 359 2.3 Gonnus mons 41°13′N 269°07′E / 41.21°N 269.12°E / 41.21; 269.12 (Gonnus Mons ) 57 2.9 Hadriacus [ e] mons 31°17′S 91°52′E / 31.29°S 91.86°E / -31.29; 91.86 (Hadriacus Mons ) 450 Hecates tholus 32°25′N 150°14′E / 32.42°N 150.24°E / 32.42; 150.24 (Hecates Tholus ) 183 4.7 Hellas montes 37°38′S 97°37′E / 37.63°S 97.61°E / -37.63; 97.61 (Hellas Montes ) 153 1.3 Hellespontus montes 44°22′S 42°46′E / 44.37°S 42.76°E / -44.37; 42.76 (Hellespontus Montes ) 730 Hibes montes 3°47′N 171°20′E / 3.79°N 171.34°E / 3.79; 171.34 (Hibes Montes ) 137 Horarum mons 51°03′S 323°26′E / 51.05°S 323.44°E / -51.05; 323.44 (Horarum Mons ) 20 Issedon tholus 36°23′N 265°10′E / 36.38°N 265.17°E / 36.38; 265.17 (Issedon Tholus ) 52 0.8 Jovis tholus 18°25′N 242°35′E / 18.41°N 242.59°E / 18.41; 242.59 (Jovis Tholus ) 58 3.0 Labeatis mons 37°29′N 284°08′E / 37.48°N 284.14°E / 37.48; 284.14 (Labeatis Mons ) 22.5 1.9 Libya montes 1°26′N 88°14′E / 1.44°N 88.23°E / 1.44; 88.23 (Libya Montes ) 1,170 2.1 Mareotis (east) tholus 36°14′N 274°52′E / 36.24°N 274.87°E / 36.24; 274.87 (E. Mareotis Tholus ) 5.0 0.6 Mareotis (north) tholus 36°42′N 273°47′E / 36.7°N 273.79°E / 36.7; 273.79 (N. Mareotis Tholus ) 3.0 0.8 Mareotis (west) tholus 35°53′N 272°02′E / 35.88°N 272.04°E / 35.88; 272.04 (W. Mareotis Tholus ) 12.0 1.3 Nectaris montes 14°36′S 305°24′E / 14.6°S 305.4°E / -14.6; 305.4 (Nectaris Montes ) 220 Nereidum montes 37°34′S 316°47′E / 37.57°S 316.79°E / -37.57; 316.79 (Nereidum Montes ) 1,130 1.9 Nia tholus 6°36′S 285°06′E / 6.6°S 285.1°E / -6.6; 285.1 (Nia Tholus ) 34 Nili tholus 9°12′N 67°24′E / 9.2°N 67.4°E / 9.2; 67.4 (Nili Tholus ) 7 Oceanidum [ f] mons 55°12′S 41°18′E / 55.2°S 41.3°E / -55.2; 41.3 (Oceanidum Mons ) 33 Octantis mons 54°56′S 318°46′E / 54.93°S 318.77°E / -54.93; 318.77 (Octantis Mons ) 19 Olympus [ g] mons 18°39′N 226°12′E / 18.65°N 226.2°E / 18.65; 226.2 (Olympus Mons ) 648 27.0 Pavonis mons 1°29′N 247°02′E / 1.48°N 247.04°E / 1.48; 247.04 (Pavonis Mons ) 375 14.0 Peraea mons 31°05′S 86°07′E / 31.08°S 86.11°E / -31.08; 86.11 (Peraea Mons ) 21.5 Phlegra montes 40°24′N 163°43′E / 40.4°N 163.71°E / 40.4; 163.71 (Phlegra Montes ) 1,350 Pindus mons 39°28′N 271°29′E / 39.47°N 271.48°E / 39.47; 271.48 (Pindus Mons ) 16.5 1.1 Pityusa patera 66°53′S 36°52′E / 66.88°S 36.86°E / -66.88; 36.86 (Pityusa Patera ) 230 6.158 Promethei mons 70°36′S 87°24′E / 70.6°S 87.4°E / -70.6; 87.4 (Promethei Mons ) 65.2 Scandia tholi 74°05′N 201°17′E / 74.09°N 201.28°E / 74.09; 201.28 (Scandia Tholi ) 480 Sirenum mons 38°12′S 212°12′E / 38.2°S 212.2°E / -38.2; 212.2 (Sirenum Mons ) 123 Sirenum tholus 34°36′S 215°12′E / 34.6°S 215.2°E / -34.6; 215.2 (Sirenum Tholus ) 54 Sisyphi montes 69°39′S 13°05′E / 69.65°S 13.08°E / -69.65; 13.08 (Sisyphi Montes ) 200 Sisyphi tholus 75°42′S 341°30′E / 75.7°S 341.5°E / -75.7; 341.5 (Sisyphi Tholus ) 28 2.1 Syria mons 13°55′S 104°18′E / 13.92°S 104.3°E / -13.92; 104.3 (Syria Mons ) 80 6.7 Tanaica montes 39°33′N 269°10′E / 39.55°N 269.17°E / 39.55; 269.17 (Tanaica Montes ) 177 Tartarus montes 15°28′N 167°32′E / 15.46°N 167.54°E / 15.46; 167.54 (Tartarus Montes ) 1,070 Tharsis montes 1°34′N 247°25′E / 1.57°N 247.42°E / 1.57; 247.42 (Tharsis Montes ) 1,840 Tharsis tholus 13°25′N 269°19′E / 13.41°N 269.31°E / 13.41; 269.31 (Tharsis Tholus ) 158 9.0 Thyles montes 69°54′S 126°30′E / 69.9°S 126.5°E / -69.9; 126.5 (Thyles Montes ) 380 Tyrrhenus [ h] mons 21°38′S 105°53′E / 21.63°S 105.88°E / -21.63; 105.88 (Tyrrhena Mons ) 143 Ulysses tholus[ i] 3°00′N 238°30′E / 3.0°N 238.5°E / 3.0; 238.5 (Ulysses Tholus ) 102 Uranius mons[ j] 26°54′N 267°54′E / 26.9°N 267.9°E / 26.9; 267.9 (Uranius Mons ) 265 4.9 Uranius tholus 26°31′N 262°26′E / 26.52°N 262.43°E / 26.52; 262.43 (Uranius Tholus ) 62 4.3 Xanthe montes 18°08′N 305°05′E / 18.13°N 305.08°E / 18.13; 305.08 (Xanthe Montes ) 500 Zephyria tholus 19°58′S 172°55′E / 19.96°S 172.92°E / -19.96; 172.92 (Zephyria Tholus ) 30.5 2.8