We went both to Sukamade turtle beach overnight and to Kawah ijen with our fantastic guide Cung. Would recommend highly both tours and definitely doing them with Osing vacation. Cung... read more was a great guide, kind, caring, considerate and knowledgable, enjoyed spending time with him and a little sad to say goodbye. At turtle beach we saw a female Green turtle laying eggs before covering her nest and making her way back into the sea, then the next morning got to release newly hatched turtles into the sea, not just watching but actually given around 20 turtles each to release. Something else to see the animal instinct of a one day old hatchling make their way into the crashing surf. Next day to ijen for a dawn descent into the crater. No words to describe the range of sights, sounds, smells and emotions involves, just do it, and do it with a guide, both for the safety, but also for the wealth of information that you cannot read