Skip to main content

Hummocky Terrain


An uneven or undulating surface texture whose roughness is between rough and smooth texture and which contains subdued and rolling landforms that are not as accentuated as those with isolated knobs Knobby Terrain) or with a rough texture. Undulating terrain is defined as having slopes of about 0.5–5°, while rolling terrain can be characterized by 2–9° slopes (Soil Survey Division Staff 1993, Table 3-1).

Related Terms

Rolling terrain; Undulating terrain


Hummocky terrain is produced by a variety of mechanisms that include the following.

Crater floors commonly have hummocky texture produced by slumped materials (Figs. 1, 2). Continuous crater ejecta also commonly have hummocky surfaces. The central peak of a crater may be a hummocky complex.

Fig. 1
figure 1

Hummocky terrain on the floor of Tsiolkovskiy near its northern wall. (a) LROC WAC, (b) LROC NAC M115475912RE at 18.9°S 128°E (NASA/GSFC/ASU)


  • Landslide Deposit
  • Crater Floor
  • Small Hill
  • Undulate Terrain
  • Crater Ejecta

These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

This is a preview of subscription content, access via your institution.

Fig. 1
Fig. 2
Fig. 3


  • Bates SC, Metcalfe RA (2006) Identifying depression-focussed groundwater recharge areas within hummocky terrain landscapes using automated digital landform classification techniques. WSC report no 02-2006, Watershed Science Centre, Trent University, Peterborough

    Google Scholar 

  • Gregg TKP, Briner JP, Paris KN (2007) Ice-rich terrain in Gusev Crater, Mars? Icarus 192:348–360

    CrossRef  Google Scholar 

  • Ivanov MA (2000) Possible nature of tessera precursor terrain on venus. Lunar Planet Sci XXXI, abstract #1241, Houston

    Google Scholar 

  • Lucchitta BK (1978) Geologic map of the north side of the Moon. USGS Miscellaneous Investigations Series Map I–1062, U.S. Department of the Interior, U.S. Geological Survey, Flagstaff

    Google Scholar 

  • Moore JM, Asphaug E, Morrison D, Spencer JR et al (1999) Mass movement and landform degradation on the icy Galilean satellites: results of the Galileo nominal mission. Icarus 140:294–312

    CrossRef  Google Scholar 

  • Scott DH, Tanaka KL (1986) Geologic map of the western equatorial region of Mars. USGS Miscellaneous Investigations Series Map I–1802–A, U.S. Department of the Interior, U.S. Geological Survey, Flagstaff

    Google Scholar 

  • Soil Survey Division Staff (1993) Soil Conservation Service. U.S. Department of Agriculture Handbook 18. U.S. Department of Agriculture, Washington, DC

    Google Scholar 

  • Yingst RA, Head JW, Moore JM, Chapman CR, Pappalardo R et al (1997) Ganymede bright terrain at very high resolution: geologic structure and regolith processes. Lunar Planet Sci XXVIII, abstract #1140, Houston

    Google Scholar 

Download references

Author information

Authors and Affiliations


Corresponding author

Correspondence to Henrik Hargitai .

Rights and permissions

Reprints and Permissions

Copyright information

© 2014 Springer Science+Business Media New York

About this entry

Cite this entry

Hargitai, H. (2014). Hummocky Terrain. In: Encyclopedia of Planetary Landforms. Springer, New York, NY.

Download citation

  • DOI:

  • Received:

  • Accepted:

  • Published:

  • Publisher Name: Springer, New York, NY

  • Online ISBN: 978-1-4614-9213-9

  • eBook Packages: Springer Reference Earth & Environm. ScienceReference Module Physical and Materials Science