panorama view of the bottom of the crater of extinct fengluling volcano recovered by green vegetation at huoshankou volcanic

asia asian attraction bottom cave china chinese cluster collapsed crater entrance extinct fengluling geopark global green greenery haikou hainan huoshan huoshankou landscape leiqiong mount national natural nature nobody outdoor panorama park people plants recovered rock scenery scenic shishan sight sightseeing symbol tourism travel unesco vegetation view volcanic volcano