Abstract: A portable storage unit includes an integrated mounting system and a rugged, weatherproof design that facilitates transport. The rigid main body of the storage unit includes a bottom cover having a bottom surface with a recessed central region positioned between adjacent side regions that extends between top and bottom surfaces of the main body and facilitates mounting the storage unit to a tree or other mounting structure. A top cover has a lip that extends over an edge of the bottom cover and a gasket creates an airtight and watertight seal therebetween. At least one hinge couples the rigid top cover to the rigid bottom cover and an anchoring member coupled to a top surface of the main body. Accessory panels provide attachment points for storage on exterior and interior surfaces of the storage unit.