Lava is only seen in level 9. You must swing over the roots to get across lava, or you will get burnt. Like falling into honey in the 6th level you will sink and burn to a crisp. This obstacle is only found on level 9 (not on any other level). Lava sometimes blocks you from bonus points like the last quarter of the yellow clover. so if you can try to get across these dangerous pools of death.