From tomorrow (18 April), work will begin to shore up a collapsing quarry face in the Vale.
Building the barrier at L'Epine will allow the minor lane next to it to reopen.
The road was closed without warning last June because it was considered dangerous.
The Vale Constables were told by Guernsey Water that the barrier, or 'bund' is a sizeable structure.
The stone will be brought in by tractor, so parking in the access road will be suspended on weekdays.
"Catastrophic" engine failure stops Channel Island ferry
Islands Unlimited won't sail again this season after engineers discovered the 'catastrophic' failure of an internal engine part.
Popular Guernsey swimming pool could re-open within days
Environmental Health say the source of the pollution at La Vallette has been traced and work is underway on a permanent fix.
Fog causes major disruption at Guernsey Airport
All six Aurigny aircraft are stuck in the UK after flying was suspended because of low visibility.
Sark chef creates astronomy app
To help more people enjoy the night sky, a resident of Sark has published a free app.
More women cycling in Guernsey after confidence booster classes
Guernsey's Health Improvement Commission rolls out British Cycling's 'Breeze' programme.
Toilet leak forces closure of popular Guernsey seawater pool
Toilet water leaking from the cafe and changing room plumbing means the Ladies' Pool at La Vallette is closed until further notice.
Alderney Children's Centre shortlisted for Nursery World Award
A nursery set up to address a childcare shortage in Alderney has been shortlisted for a national award.
Hottest summer for Guernsey since records began
Guernsey Met has confirmed that the island had its warmest summer since records began in 1843.
