(also gilgai hole)
A hollow where rainwater collects; a waterhole.
- The lakebed soils are a mosaic of grey and red heavy clays and in places contain channels and gilgais.
- It will not grow in seasonally flooded gilgais in brigalow clay soils.
- In the Australian examples this is due to gilgai, in the Sudanese example to differential compaction of the soil on weathering.
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