A tree stand that includes a seating section and a standing section. Each section includes a first frame, a second frame, a first engaging member, a second engaging member that is responsive to a pneumatic piston, a pivoting gate member, and a support platform. The support platform in the seating section of the tree stand is a seat. The support platform in the standing section is a standing platform. A tree stand is positioned onto a tree by opening the pivoting gate member so that the tree trunk can be received into the first frame and thereby engage the first engaging member and the “V” shaped tooth side of the second engaging member. As the user ascends or descends the tree, the second engaging member is adjusted to compensate for changes in tree diameter by removing and replacing a tethered retaining pin.
