Lacus Gaudii [SEP] located on astronomical body
Lacus Gaudii
Lacus Gaudii (Latin for "Lake of Joy") is a small lunar mare in the Terra Nivium region of the Moon. It is located at 16.3° N, 12.3° E and is 89 km in diameter. 
External links.
- Lacus Gaudii at The Moon Wiki
States. The name for the whole system of canyons is Valles Marineris. Starting at the west with Noctis Labyrinthus in the Phoenicis Lacus quadrangle, the canyon system ends in the Margaritifer Sinus quadrangle with Capri Chasma and Eos Chasma (in the south). The word Chasma has been designated by the International Astronomical Union to refer to an elongate, steep-sided depression. Valles Marineris was discovered by and named for the Mariner 9 mission. Moving east from Noctis Labyrinthus, the canyon splits into two troughs, Tithonium Chasma and Ius