BRIEF DESCRIPTION
The south-eastern part of Oceanus Procellarum. The Riphaeus Mountains stretch along the eastern edge of the Section. To the south-east of the crater Lansberg D there is a large dome. This part of Oceanus Procellarum contains numerous wrinkle ridges and small isolated hills, and is interesting for telescopic observation, especially under low illumination. Larger telescopes will reveal the narrow sinuous rille Rima Herigonius. Refer to your copy of the Antonin Rukl lunar atlas chart, page 109.

EARTH-BASED TELESCOPIC IMAGES:
None on file

LUNAR ORBITER IMAGES:
Lunar Orbiter Database
Euclides, 12 km
 http://www.lpi.usra.edu/research/lunar_orbiter/img/4-132H3.jpg
Ewing, Dorsa
Herigonius, 15 km
 http://www.lpi.usra.edu/research/lunar_orbiter/img/4-137H2.jpg
Herigonius, Rima
Norman, 10.3 km
 http://www.lpi.usra.edu/research/lunar_orbiter/img/4-132H2.jpg
Procellarum, Oceanus
Riphaeus, Montes
Scheele, 5 km
Wichmann, 10.6 km
 http://www.lpi.usra.edu/research/lunar_orbiter/img/4-137H3.jpg

RESEARCH UPDATES:
AS16-5452(P) - Close-up of ridges and faults near Montes Riphaeus (AOTM, SP-362)