>> reporter: since the cumbre vieja volcano roared back to life last month, its river of fires have scorched more than 2,000 acres. this is about as close as we can get to the volcano. you can see the smoke rising from the lava as it flows down the side of the mountain, hitting some buildings, setting them on fire. molten rock buried and baked the town of la laguna, including the home of maria fuentes and her son, airam. they fled just in time, but as the lava advances, they're on the run again. "every day we pray," airam says. "we're afraid of the uncertainty." with the eruption expected to continue for weeks, even months, the damage runs deep. >> many, many thousands of people, they have lost everything-- house, animals-- everything. >> reporter: around 90% of the population has not had to evacuate yet.