Dalham Farm

{{Infobox SSSI

|image= Dalham Farm 2.jpg

|image_caption =

|name= Dalham Farm

|aos= Kent

|interest=Geological

|gridref={{gbmappingsmall|TQ 778 753}}

|area= {{convert|8.8|ha|acre|abbr=off}}

|notifydate= 1987

|map=[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=sssiIndex&query=HYPERLINK%3D%271003835%27 Magic Map]

}}

Dalham Farm is an {{convert| 8.8 |ha|acre|abbr=off}} geological Site of Special Scientific Interest in High Halstow, north of Rochester in Kent.{{cite web|url=https://designatedsites.naturalengland.org.uk/SiteDetail.aspx?SiteCode=S1003835&SiteName=dalham&countyCode=&responsiblePerson=&SeaArea=&IFCAArea= |title=Designated Sites View: Dalham Farm | series= Sites of Special Scientific Interest|publisher=Natural England|access-date = 14 January 2018}}{{cite web|url= http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=sssiIndex&query=HYPERLINK%3D%271003835%27|title=Map of Dalham Farm|series= Sites of Special Scientific Interest|publisher=Natural England|access-date=14 January 2018}} It is a Geological Conservation Review site.{{cite web|url= http://jncc.defra.gov.uk/default.aspx?page=4174&gcr=1282 |title= High Halstow (Mass movement) |series=Geological Conservation Review |publisher=Joint Nature Conservation Committee|access-date= 11 January 2018}}

The farm shows mass movement of rock and soil on a shallow 8% slope of London Clay, which is seen in ridges across the site. It may be the lowest angled slope failure in Britain, and is important in demonstrating slope degradation where there is no coastal erosion.{{cite web|url= https://designatedsites.naturalengland.org.uk/PDFsForWeb/Citation/1003835.pdf |title=Dalham Farm citation|series= Sites of Special Scientific Interest|publisher=Natural England|access-date=14 January 2018}}

A public footpath crosses the site.