Travis are a Scottish rock band formed in Glasgow in 1990, composed of Fran Healy (lead vocals, rhythm guitar), Dougie Payne (bass guitar, backing vocals), Andy Dunlop (lead guitar, banjo, backing vocals) and Neil Primrose (drums, percussion). The band's name comes from the Harry Dean Stanton character Travis Henderson from the film Paris, Texas. The band is widely claimed by the media as having paved the way for other bands such as Keane and Coldplay to go onto achieve worldwide success throughout the 2000s, particularly through the band's The Man Who (1999) album. The band released their debut album, Good Feeling (1997) to moderate success where it debuted at number nine on the UK Albums Chart and went onto achieve a silver certification from the BPI in January 2000.

In 2002, however, things came to a halt for Travis, with the band almost calling it quits, after drummer Neil Primrose went head-first into a shallow swimming pool while on tour in France, just after a concert at Eurockeennes festival. Breaking his neck, he almost died due to spinal damage. If not for his road crew, he also would have drowned. Despite the severity of the accident, Primrose has since made a full recovery.  With Primrose having recovered, Travis regrouped and re-evaluated. Moving into a cottage in Crear, Argyll and Bute, they set up a small studio, and over two weeks, came up with nine new songs that would form the basis of their fourth studio album, 2003's 12 Memories. Produced by Travis themselves, Tchad Blake, and Steve Orchard, the album marked a move into more organic, moody and political territory for the band. Although this seems to have alienated some fans, the album generally received very positive reviews (for example, "Then, of course, there's Travis and their album 12 Memories [Epic]. You just have to sit there and listen to it all the way through, and it will take you on a real journey. It's like an old album. It's like the Beatles' Revolver [1966]. Fran Healy's voice and lyrics are mesmerizing and beautiful"--Elton John), singles such as "Re-Offender" did very well on the UK chart, and the album itself reached No. 3. Yet it also saw them lose ground in the U.S., where Coldplay had usurped Travis during their 2002 absence. Much later, Fran Healy spoke about the album as a whole being about him working through his own clinical depression, and the 12 memories being 12 reasons for him reaching his depressed state. At the time this wasn't mentioned, but the revelation that Healy was depressed ties in with the band's decision to take longer writing and releasing their next work.  In 2004, Travis embarked on a highly successful tour of Canada, the US, and Europe (supported by Keane in the UK), and on November 2004, the band released a successful compilation of their singles, Singles, as well as the new tracks, "Walking in the Sun" and "The Distance" (written by Dougie Payne). This was followed by a series of small, intimate gigs at UK venues such as Liverpool's Cavern Club, London's Mean Fiddler, and Glasgow's Barrowlands. While on tour, the band also made a series of impromptu acoustic "busks", raising money for the charity The Big Issue. In addition to other performances, they also headlined the 2005 Isle of Wight Festival and T in the Park.  On 2 July 2005, Travis performed at Live 8's London concert, and four days later, at the Edinburgh 50,000 - The Final Push concert. Travis also participated in Band Aid 20's re-recording of "Do They Know It's Christmas?"--Healy and friend Nigel Godrich playing leading roles in its organisation. Healy is a part of the Make Poverty History movement, having recently made two trips to Sudan with the Save the Children organisation. On 13 July 2006, the members of Travis stuck a giant post-it sticker on the front door of the Downing Street home of British Prime Minister, Tony Blair. It read: "Tony Blair--Some steps forward, much to do at the G8, make poverty history."

Using a quote from the above article, answer the following question: What caused Primrose's accident?
after drummer Neil Primrose went head-first into a shallow swimming pool while on tour in France, just after a concert at Eurockeennes festival.