'I'm a hiking expert - here's how Jay Slater could have survived treacherous Tenerife terrain'
!['I'm a hiking expert - here's how Jay Slater could have survived treacherous Tenerife terrain'](https://i2-prod.dailystar.co.uk/incoming/article33133308.ece/ALTERNATES/s615/1_jayJPG.jpg)
Missing British teen Jay Slater could have taken the Masca Gorge Trail, which while perilous off-track, is dotted with water points, a surveying expert has said in a hopeful new theory