According to the Deep State map, this is a part of the territory in the Kursk region, near the village of Plekhovo.
The Russian Ministry of Defence claims that the villages of Darino and Plekhovo have come under their control.
However, DS notes that a small part of Plekhovo is still under the control of the Armed Forces of Ukraine. Yesterday, Russian military channels reported that this village is already fully under the control of the Russian army.