Object: L 62
Feature Name: Rümker
Significance: Large volcanic dome

Mons Rümker is an isolated volcanic formation that is located in the northwest part of the Moon's near side. The feature forms a large, elevated mound in the northern part of the Oceanus Procellarum. The mound has a diameter of 70 kilometres, and climbs to a maximum elevation of about 1,100 metres above the surrounding plain. It was named after Karl L. C. Rümker.

Mons Rümker has a concentration of 30 lunar domes—rounded bulges across the top, some of which contain a small craterlet at the peak. These are wide, circular features with a gentle slope rising in elevation a few hundred meters to the mid-point. Lunar domes are the result of lava erupting from localized vents followed by relatively slow cooling.

DMK 21AU-4.AS through 200mm f/4 GSO Newtonian with Tele Vue 5x Powermate.

Best of 2500 frames stacked in Registax. Processed in Astra Image 3.0 and Paintshop Pro.