hummocks
Low rounded knolls
Hummocks are small rounded mounds or knolls rising from flat terrain.
They appear in marshes, tundra, and ice fields—natural bumps in otherwise level landscapes: The explorers trudged across the hummocks of pack ice.
A single such mound is a hummock.
The adjective hummocky describes terrain marked by these irregular rises.
Frigid treeless biome
- muskegWaterlogged peat terrain
- bogAcidic peat wetland
- peatlandWetland with accumulated plant matter
- wetlandWaterlogged land ecosystem
marsh · fen · swamp · moorland · heath · permafrost · taiga · arctic
Load carrier or tumulus
- tumulusAncient burial mound
- cairnMemorial stone pile
- moundHeaped earth formation
- earthworkConstructed soil structure
grave · prehistoric · ancestral · ceremonial · chambered · megalith · dolmen · monument
tundra
Frigid treeless biome
wetland · marsh · fen · swamp · moorland · heath · permafrost · taiga · arctic · subarctic
barrow
Load carrier or tumulus
earthwork · grave · prehistoric · ancestral · ceremonial · chambered · megalith · dolmen · monument · archaeological
moraine
Glacier-deposited debris pile
crevasse · drift · polar · Antarctic · Arctic · esker · drumlin · kettle · outwash · ablation
shoal
Shallow water hazard
- sandbarUnderwater ridge of sediment
- reefUnderwater rock or coral formation
- shallowsAreas of little depth
seabed · ridge · navigation · hazard · chart · coastal · submerged · bank · bar · sounding
hummockshollows
Sunken areas, indentations
depressions · pits · troughs · swales · concavities