JTC-2688
Mare Imbrium
Below the dark, perfectly flooded floor of Plato, on the northern shore of the Sea of Showers beneath the Alpine Valley.
- Coordinates
- 48.20° N, 8.50° W
- Diameter
- 5.9 km
Schematic elevation, rendered from catalogue data. Sunlight from the west.
Mare Imbrium
31.50° N, 21.30° W
Set against a wrinkle ridge, a frozen buckle in lava that cooled three billion years ago. The ridge points toward the crater like a drawn arrow.
Best seven days after new moon, when low sunlight rakes the ridge and the rim catches light first.
The bright, ancient uplands. Rougher country, more dramatic in a telescope.
Dedication
$189
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The Moon keeps one face turned toward Earth, so your crater is fixed in the same spot of sky every clear night of your life.
JTC-1108 lies at 31.50° N, 21.30° W, in Mare Imbrium. On the map, north is up and east is to the right, exactly as it appears through a telescope from the high desert.

Mare Imbrium
Below the dark, perfectly flooded floor of Plato, on the northern shore of the Sea of Showers beneath the Alpine Valley.
Mare Imbrium
A clean, bowl-shaped impact on the smooth floor of the Sea of Showers. Its rim is young enough to still throw a crisp shadow at first quarter.
Mare Nectaris
On the floor of the Sea of Nectar, a small, deep basin whose concentric rings are still traceable four billion years on.