ボルダリングウォール：立体的なボリュームと緩衝材の表面

Render an outdoor bouldering wall in a public park, low enough to need no ropes. Show a sculpted freestanding mass about four metres tall made of textured fibre-reinforced concrete in a warm grey, its faces varied — one nearly vertical, one gently overhanging, one with a rounded arête — so the form reads as a piece of landscape sculpture rather than a panel. Detail dozens of bolt-on holds in muted colours screwed into threaded inserts across the faces, grouped into readable routes marked by small coloured tags at the start. Show the base surrounded by a generous fall zone of engineered wood fibre or rubber mulch, its edge held by a flush timber kerb and stepped down from the adjacent paving. Include a low seating wall at the perimeter with bags and shoes, a chalk brush hanging on a hook, and a signboard with rules and grades. Show a climber mid-move and two others watching. Light with bright dappled shade from an adjacent tree. Photorealistic, sculptural, warm grey with colour accents, eye-level view.