Great n fun experience n learning of nature/animal diversity and Pulau Ubin's history and present by knowledgable guide Adrin Foo. The route is less than 4km and covers just the East (1/3 of Ubin including Sensory Trail, Sungei Ubin, Chek Jawa Wetlands, Mangroves, kampungs - view from outside gates). For the initial price of $70, wish the route was longer and could include Puaka Hill and a little of the West side (e.g. German Girl Shrine)... perhaps can include van to those sites since the elderly can't walk too long.