An earthquake shook houses as it hit parts of the south-east this weekend.
The quake, which had a magnitude of 2.3, hit Oxfordshire at about 11pm last night, the British Geological Survey said.
The small quake was centred in the Thame area, prompting people nearby to post about feeling their homes being rocked by its force.
Emily Smith said on Twitter: "Magnitude 2.3 earthquake in Bucks last night, that explains the house shaking then."
Anna Edwards tweeted: "Earthquake or explosion? Something moved n S Oxon. Felt in Chinnor & Thame."
A caller to BBC Radio Oxford said: "The whole place shook - it was more than a wind and rattled the windows."
And seismologist Glen Ford told the corporation: "The fact it was noticed makes it a bit special.
"It was a very small earthquake, but in UK terms it was significant as it was actually felt by the general public - 90 per cent of earthquakes go completely unnoticed."
