| A few spindly trees cling to the sides of the gorge, but their roothold on the tiny patches of soil gathered in cracks is precarious. |
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| This will allow young native trees such as oak, ash or beech to reclaim a roothold in the woods. |
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| If you allow them to gain a roothold, future battles will be fought to contain them. |
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| The sheeting of water keeps the edges of the rock wet without eroding the soil, but in this precarious location no tree or large shrub can maintain a roothold. |
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| No stranger to extremes, whitebarks inhabit high-altitude environments near timberline, where other tree species find it difficult to establish a roothold. |
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