Question: In which year did Stonehenge's stones get roped off?
About the article "Stonehenge", section "Setting and access".

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The Station Stones are elements of the prehistoric monument of Stonehenge.
Originally there were four stones, resembling the four corners of a rectangle that straddles the inner sarsen circle, set just inside Stonehenge's surrounding bank.
Two stood on earth mounds at opposing corners, one corner broadly in the north of the site and one in the south.
The mounds are called the North and South barrows although they never contained burials.
The ring ditches surrounding these barrows respect the presence of Stonehenge's encircling bank indicating that they postdate this feature.
The other two corners of the rectangle are occupied by the two surviving stones which are undressed sarsens.
Their installation at the monument dates to sometime in Stonehenge phase 3, perhaps around 4,000 years ago.
Various astronomical alignments have been suggested for the stones, all involving other features at the site.
As they cannot be said with certainty to have been contemporaneous with other stones or posts at Stonehenge, archaeoastronomical theories regarding their function have been treated with scepticism by mainstream archaeology.
Although described as forming a rectangle, the two stones and the two stone settings can also be described as representing two opposite facets of an octagon.
This suggests that they were laid out to a geometric plan and challenges the theory that the positions were astronomically determined.  
On several days each year, the sun sets in alignment with the Infinite Corridor and shines along its entire length.
This is known as "MIThenge", a reference to Stonehenge's alignment with the sun (although the type of alignment bears a closer relationship with that of Newgrange and Maeshowe in that the sunlight passes through the mass of the buildings rather than through the standing stones of Stonehenge).
These alignments occur on several days around January 31 and November 11.
The phenomenon was spotted, calculated, and popularized in 1975-76 according to a "Sky and Telescope" article.
The MIThenge site has more information and predictions for when the phenomenon will occur. 
Roped was a 1919 American Western/comedy film directed by John Ford and featuring Harry Carey.
The film is considered to be lost.
"Roped" is one of at least 25 films in which director John Ford and actor Harry Carry collaborated on between the years of 1917 and 1921.
Ford saw Carry as a mentor and their worked on the story ideas for several of their films together.
During these collaborations, Carry made more per film then Ford.
By 1919, the year "Roped" came out, Ford was making 300 dollars a week, Carry was making 1,250.
This differential in pay led to tension between the two. 
The Oxford English Dictionary cites Ælfric's 10th-century glossary, in which "henge-cliff" is given the meaning "precipice", or stone, thus the "stanenges" or "Stanheng" "not far from Salisbury" recorded by 11th-century writers are "supported stones".
William Stukeley in 1740 notes, "Pendulous rocks are now called henges in Yorkshire...I doubt not, Stonehenge in Saxon signifies the hanging stones."
Christopher Chippindale's "Stonehenge Complete" gives the derivation of the name "Stonehenge" as coming from the Old English words "stān" meaning "stone", and either "hencg" meaning "hinge" (because the stone lintels hinge on the upright stones) or "hen(c)en" meaning "hang" or "gallows" or "instrument of torture".
Like Stonehenge's trilithons, medieval gallows consisted of two uprights with a lintel joining them, rather than the inverted L-shape more familiar today.
The "henge" portion has given its name to a class of monuments known as henges.
Archaeologists define henges as earthworks consisting of a circular banked enclosure with an internal ditch.
As often happens in archaeological terminology, this is a holdover from antiquarian usage, and Stonehenge is not truly a henge site as its bank is inside its ditch.
Despite being contemporary with true Neolithic henges and stone circles, Stonehenge is in many ways atypical – for example, at over tall, its extant trilithons supporting lintels held in place with mortise and tenon joints, make it unique. 
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