Green Canyon is not a sea trip — and that is exactly the point. An air-conditioned coach collects you from your hotel in Alanya or Avsallar and climbs into the Taurus foothills, where the dam at Oymapınar holds back a lake of improbable emerald green. That colour alone justifies the space on your camera roll.
On the water the programme is pleasingly simple: cruise, look up at pine-clad cliffs, stop, swim, repeat. The lake is fed by mountain springs, so the swim stops are a genuine jolt — properly cold, wonderfully clean, and exactly what an overheated body wants. Along the route you pass the trout-farm springs, where fish are easy to spot in the clear headwaters of the Manavgat River.
A local guide travels with the group, travel insurance is included, and lunch arrives as an open buffet served on deck mid-cruise. One honest note: drinks — even bottled water — are sold separately, so carry a little cash. After roughly nine hours you are back at your hotel door.