Hubbard's Hill

{{Hatnote|Not to be confused with Hubbard's Hills in Louth, Lincolnshire}}

{{Use dmy dates|date=April 2022}}

{{Infobox SSSI

|image= Stile on the Greensand Way, Hubbard's Hill - geograph.org.uk - 1381327.jpg

|image_caption =

|name= Hubbard's Hill

|aos= Kent

|interest=Geological

|gridref={{gbmappingsmall|TQ 534 520}}

|area= {{convert|66.6|ha|acre|abbr=off}}

|notifydate= 1986

|map=[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=sssiIndex&query=HYPERLINK%3D%272000062%27 Magic Map]

}}

Hubbard's Hill is a {{convert| 66.6 |ha|acre|abbr=off |adj=on }} geological Site of Special Scientific Interest south of Sevenoaks in Kent.{{cite web|url= https://designatedsites.naturalengland.org.uk/SiteDetail.aspx?SiteCode=S2000062&SiteName=hubbard&countyCode=&responsiblePerson=&SeaArea=&IFCAArea= |title=Designated Sites View: Hubbard's Hill | series= Sites of Special Scientific Interest|publisher=Natural England|access-date = 13 February 2018}}{{cite web|url= http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=sssiIndex&query=HYPERLINK%3D%272000062%27|title=Map of Hubbard's Hill|series= Sites of Special Scientific Interest|publisher=Natural England|access-date= 13 February 2018}} It is a Geological Conservation Review site.{{cite web|url=http://jncc.defra.gov.uk/default.aspx?page=4174&gcr=786 |title= Hubbard's Hill (Quaternary of South-East England) |series=Geological Conservation Review |publisher=Joint Nature Conservation Committee|access-date= 11 January 2018}}

This Quaternary site exhibits solifluction (erosion by freezing and thawing). The main deposits date to the Wolstonian glaciation around 130,000 years ago, but the latest have radiocarbon dates of only 12,500 years, during the most recent Younger Dryas ice age.{{cite web|url= https://designatedsites.naturalengland.org.uk/PDFsForWeb/Citation/2000062.pdf |title=Hubbard's Hill citation|series= Sites of Special Scientific Interest|publisher=Natural England|access-date= 13 February 2018}}

The Greensand Way long distance footpath goes through the site.