The municipality of Irosin is an entry point to Bulusan Volcano Natural Park--- one of the remaining tropical forests in the Bicol Region and declared as a protected area due to its rich biological diversity. As such,it is an ideal site for mountaineering and ecological trekking. The 3,673-hectare park,almost 1/3 of the area of which is within Irosin,is now the subject of a protection and conservation drive.  The trek to its peak,which is 1,565 meters ASL,immerses you in the surrounding forest's exotic flora and fauna in addition to the majestic Lake Bulusan lying 2,084 ft. upon the slopes of the still active volcano. At the summit is an exhilarating view of Sorsogon and surrounding provinces. The Mount Jormajan peak and mountain ranges in Barangay Cawayan and Tabon-tabon (Mt. Maraot Banwa) are also ecological trek sites.

How to get there:
FROM MANILA

By Air:
Take daily flights of Philippine Airlines or Air Philippines at the Manila Domestic Airport to Legazpi City. Then take a rented van or bus for a 100-kilometer two-hour scenic drive to Irosin,or the connecting bus or jeepney ride from Legazpi to Sorsogon,and then Sorsogon to Irosin.

By Land:
From various southbound bus terminals in Manila. Take the following bus companies that goes directly to Irosin: Philtranco,Elavil Transport,Peñafrancia Tours,Silverstar Lines,BLTB,CUL and AMA Transportation,or take any Visayas-bound bus and alight at Irosin for a 12-hour trip. Night and day trips are available from Ali Mall-Cubao and Pasay stations.

FROM VISAYAS

By Sea-Land:
Take ferry boats from Allen,Samar to Matnog,Sorsogon. Then take jeepneys that ply the Matnog-Irosin route for a 30-minute ride.

LOCAL TRANSPORTATION

The mode of transportation in the inter-barangay mobility of people and products in Irosin are mainly tricycles and jeepneys. Jeepneys and bus lines ply the inter-town as well as inter-province routes.