Definition: Generate an appropriate title for the given text. The generated title must be short and include the main topic of the text. The preferred titles are under fifteen words.
Input: The hole appeared near Exeter's St James Weir on the River Exe on Tuesday night after heavy rain in the area. The local council said it was "working hard" to retrieve the bench safely, stabilise the bank and fill the hole. Officials are warning the public to stay away from the area while work to make the site safe is carried out. In a post on Twitter, the council said: "A memorial bench has ended up at the bottom of a sinkhole and our staff are working hard to retrieve it safely so it can be used again." A council spokesman said the bench had only just been installed and the authority was trying to contact the family who paid for it. A full assessment of the hole, which is also 10ft wide (3m) will be carried out when the level of the River Exe has dropped. Sinkholes are often caused by an abnormal amount of water seeping into the ground but they are difficult to predict. Water absorbs carbon dioxide in the earth and becomes acidic, which dissolves soluble rock such as chalk or limestone, with the ground eventually giving way. Heavy rainfall, burst water mains and drainage all increase the likelihood of sinkholes appearing. They can also occur in areas where there has been mining activity in the past.

Memorial bench disappears into Exeter riverbank sinkhole