Vents

Every lunar dome, sinuous rille, and many other depressions are vents or source regions for volcanic eruptions. This is a listing of a type of vent that was previously unknown but now at least three have been reported. These vents are elongated and typically a few km wide, 3-10 km long, have sharp edges that lead down in a vee-shaped walls, and they are the source for dark pyroclastic deposits. As more are discovered on LRO images please add them to the list.

Grimaldi Vent

3.8 x 2.2 km, ~441 m deep (Hawke et al. 2012)
LPOD with LRO image
LOCALIZED PYROCLASTIC DEPOSITS IN THE GRIMALDI REGION OF THE MOON. B. Ray Hawke et al. 43rd Lunar and Planetary Science Conference (2012) 1749.pdf

Humboldt Vent

LPOD Cloudsourcing Vents (upper right photograph)
  According to the online LRO ACT REACT Quick Map its pinpoint location should be: LATITUDE -29.05, LONGITUDE: 80.52 (near the southern part of Humboldt's rim, and very near one of the dark regions on Humboldt's floor). - DannyCaes Sep 30, 2012
  Investigation of the LRO's extreme close-up (of this vent) reveals several house-sized boulders on its inner slopes and floor. - DannyCaes Sep 30, 2012
 
 

Rima Bode II Vent

13° North/ 4° West, on the eastern part of Sinus Aestuum, very near Rima Bode II, see Lunar Orbiter 5 frames LO5-120 med, 121 med, 122 med, and 123 med.
  Of those four, LO5-122-h2 shows a close-up of the vent itself (warning: KING-SIZE scan!).
  Research Lunar Orbiter 5 photographs: Danny Caes
  Antonin Rukl depicted this vent on chart 33 of his atlas (although he didn't add the name Rima Bode II).- DannyCaes Sep 30, 2012
  The Times Atlas of the Moon shows it on chart 41 (but... the "Bode" of Rima Bode II was printed on it).- DannyCaes Sep 30, 2012
  Investigations of the LRO's extreme close up reveals a very small high-albedo ray craterlet on the western part of its southern inner slope (of this vent), and I wonder if something of it could be observed during Full Moon, perhaps through powerful telescopes.- DannyCaes Sep 30, 2012
 
 
 

Sulpicius Gallus Vent

AS17-149-22882
(reported by Danny Caes)
Apollo 17 image
A northward oblique look at this vent was captured in Apollo 15's panoramic ITEK-camera frame AS15-P-10169.- DannyCaes Aug 14, 2012
A black-and-white Hasselblad photograph of it, by Apollo 17: AS17-154-23659 (near the frame's upper left corner).- DannyCaes Sep 21, 2012

Mare Pacificus Vent

Kaguya Terrain Camera
LPOD

Possible vents, and/or lookalikes of vents

- Kathleen in Palus Putredinis?
See Apollo 15's orbital close up photographs AS15-81-10904 and 10905.
- Jomo near Rima Hadley?
See LPOD January 3 2014.
- The two unnamed small depressions at the western end of Rupes Cauchy?
See Apollo 15's orbital close up Hasselblad photographs AS15-81-10873, AS15-81-10944, and 10946, and also panoramic ITEK-camera frame AS15-P-9844 (central part of photograph).
See also Apollo 17's panoramic ITEK-camera frame AS17-P-3006.
And Apollo 15's orbital color Hasselblad photographs AS15-97-13206, 13207, and 13208.
- DannyCaes Mar 18, 2012

LPOD links

Cloudsourcing Vents (start of new project)
Watching the other rilles (vent V1; Jomo, and vent V2; Kathleen)

LROC posts

Post 960: Possible volcanic vent southwest of Vendelinus (mature 4 km crater in the southeastern part of Mare Fecunditatis).