La Selva is the word to say "the jungle" in spanish.

One of the most common meaning of jungle is land overgrown with tangled vegetation at ground level, especially in the tropics. Typically such vegetation is sufficiently dense to hinder movement by people, requiring that travellers cut their way through. This definition draws a distinction between rainforest and jungle, since the understorey of rainforests is typically open of vegetation due to a lack of sunlight, and hence relatively easy to traverse. Jungles may exist within, or at the borders of, rainforest in areas where rainforest has been opened through natural disturbance such as hurricanes, through human activity such as logging. The successional vegetation that springs up following such disturbance of rainforest is dense and impenetrable and is a ‘typical’ jungle. Jungle also typically forms along rainforest margins, such as stream banks, once again due to the greater available light at ground level.