Who wrote the big characters of Bailong ladder and when?

Shen Peng's inscription, probably dated 1996. In August, Shen Peng, Vice Chairman of China Federation of Literary and Art Circles, Acting Chairman of China Calligraphers Association and a famous calligrapher, visited Wulingyuan. On the way, I wrote seven poems in one breath, among which "Tianzishan" said: "In the barrier of the earth turning to the sky, the scenery moves with the steps. It takes a long time to become interesting, and you can attract all the winds by raising your head. " ?