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21 February 2014, 12:12 | Updated: 21 February 2014, 12:13
Watch concrete being poured into the Hemel Hempstead sink hole.
The hole measuring 35ft wide and 20ft deep opened up underneath a house in Oatridge Gardens on Saturday 15 February.
Following advice from a leading sink-hole expert engineers this morning filled the whole with concrete.
17 homes were evacuated when the hole first appeared.
Six families still haven't been allowed back into their homes, as there's no gas or electricity.