You encounter plan that has great structures on tall brown stocks, which kind of plays and what are the green structures
Based on the given description, it sounds like you have encountered a playground with tall brown stocks, possibly referring to tall wooden beams or poles that make up the structural framework of the playground equipment. The mention of "great structures" suggests that the playground has exciting and well-designed play elements.
As for the green structures, without further information, it is difficult to determine specifically what they are referring to. However, in playgrounds, green structures commonly include features like slides, swings, climbing frames, monkey bars, or other play equipment that may be painted in green or have green accents. These structures are typically made from metal, plastic, or timber and are designed to provide various play opportunities and challenges for children.