Pentire and Rumps Nature Walks. Duration of approximately 4 hours, the walks take place every Wednesday during May, June, July and August (the last one is 31st), covering flora and fauna as well as birds. Walks start at 10 am and are led by Jack Humphreys, Bernard Ide, Mike Scawen and Alan Taylor. Meet at the Lead Mines car park, Pentireglaze, for a 10.00 am start.