gainey of loss of lives and works here monitoring the caldera. during the summer he accompanies excursions to protect tourists from the local bad as. the bad trail goes north and reaches down near. this crater filled with cold clear water is known as a mom. this one is about a kilometer in diameter it's in a cliffs a quite steep so there's barely any shoreline around the lake. just a narrow black ring of ash volcanic bombs or masses of molten rock and scoria. here's a piece of volcanic glass i found by the lake it's very sharp is just the kind of thing that people use to scrape animal skins with before arnon steel were invented so very sharp and very hard this is a piece of hardened lava the last time was on a rock to was forty thousand years ago this time hasn't been long enough for grass to cover the last forty thousand years he's an engine. this group of tourists is exploring a new chapter in the history of kamchatka as eruptions one of their plans is to conquer to volcano comes the applause. the unspoken rules of climbing volcanoes are quite