Israel has moved the blocks which are supposed to mark its post-ceasefire line of control deeper into Gaza in several places, sowing confusion among Palestinians.
Satellite images reviewed by BBC Verify show that in at least three areas Israel placed blocks, before returning later and moving the positions further into the Strip.
Under the terms of the US-brokered deal with Hamas, Israel agreed to withdraw troops beyond a line marked in yellow on Israeli military maps, which it has illustrated on the ground with concrete yellow blocks.
Defence Minister Israel Katz warned in October that anyone crossing the Yellow Line would be met with fire.
Since these comments were made, there have been a series of deadly incidents around the line. In Beit Lahia, Jabalia and al-Tuffah, the Israel Defense Forces (IDF) placed blocks and later returned to move them deeper inside Gaza. In total, 16 positions were moved.
In the al-Tuffah neighbourhood of Gaza City, satellite images show that IDF troops moved at least seven already placed blocks between 27 November and 25 December. The position of the markers was moved on average 295m (968ft) deeper inside the Strip.
As well as the moved blocks, BBC Verify mapped 205 other markers. More than half of those have been placed significantly deeper inside the Strip than the line marked on maps.
An IDF spokesperson rejected all claims that the Yellow Line has been moved or its crossing by IDF troops. They stated that the IDF is operating to visually mark the Yellow Line according to ground conditions and ongoing operational assessments.
Analysis of satellite images suggests some sections of the Yellow Line also remain unmarked on the ground more than three months since the ceasefire began, leaving residents confused about the beginning of the IDF's dangerous combat zone.
Last month, a local man expressed his feelings about being trapped behind the Yellow Line after the movements of blocks. He articulated that the fear of constant shelling and gunfire creates a terrifying atmosphere, as civilians navigate their lives in a war-torn area.
Experts underline that the movement is a form of territorial engineering, strategically benefiting Israel while diminishing the living conditions and mobility of Palestinians.
