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Construction for Landscape Architecture by Jamie Liversedge, Robert Holden

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The ha-ha

This is a park feature that consists of a vertical retaining wall on the inner side and a sloping-sided trench on the outer side. Together, these form a barrier which is livestock proof and aims to provide a clear view from a house to its “park” setting with no obstruction.

A form of reverse ha-ha, often with a fence on top of the wall, has frequently been adopted in contemporary Parisian parks. The retaining wall is placed on the outer side and the ditch on the park side, thus giving a clear view into the park.

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The ha-ha at Rousham, ...

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