Time of the Turtle King (Magic Tree House #38)

It's just a regular day when ordinary kids Jack and Annie are whisked away in the magic tree house to the Galapagos islands, where they must save a sea turtle from an erupting volcano! But what do Jack and Annie know about saving a sea turtle?! Plenty, thanks to some magic that makes them experts. A helicopter ride, rushing lava, and a whole lot of determination make this one adventure Jack and Annie will never forget!