A notice posted on the eastern section of the hillfort explaining conservation work on Midsummer Hill Hillfort, Herefordshire (February 2012).
The notice explains that the Malvern Hills Conservators are selectively clearing trees to prevent further degradation of the hillfort by protecting it from tree-root damage.
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Thanks for posting this, very interesting and hopefully of long-term benefit to the site. The "please do not approach the contractors" thing seems a bit much, mind.