You could lie on a beach all week, but where does that leave your inner mountain goat? Europe's peaks are packed with activities, whether you're searching for an adrenaline boost or a high-altitude lake to swim in. So, what's your tip for a great holiday in the mountains? As well as activities we want to hear about any great deals you've found at off-season ski resorts and chalets, plus scenic campsites.

The winner of this week's competition wins a two-person Jack Wolfskin tent. Submit your tips by clicking on the blue button and using the text tab. Try and include as much detail as possible – including website and prices, etc – and feel free to add a photo if you own the copyright to it, but it will be the text we're judging! Your tip should be around 100 words. Terms and conditions.

Closes 31 July at 7am BST

• GuardianWitness is the home of user-generated content on the Guardian. Contribute your video, pictures and stories, and browse news, reviews and creations submitted by others. Posts will be reviewed prior to publication on GuardianWitness, and the best pieces will feature on the Guardian site.