Tenerife is infamous for its southern resort towns with all-day British breakfasts and cheap booze. If that are your expectations (as were mine, naively so), be ready to be positively surprised. The volcano El Teide splits the island in several microclimates with completely different landscapes. Lush rainforests high up in the mountains in the north, El Teide’s moonlike volcanic valleys, dry plains filled with cacti in the south,…