拒馬(ma)河(he)(he)溶洞(dong)(dong)漂流的起點位于拒馬(ma)河(he)(he)畔莊子(zi)村,終點位于野(ye)三坡清(qing)泉山附近,是(shi)(shi)北京(jing)周邊唯一(yi)帶溶洞(dong)(dong)的漂流。溶洞(dong)(dong)內由多段組成(cheng)(cheng),蜿蜒曲折,于峭壁下的河(he)(he)道穿插前行,洞(dong)(dong)內鐘乳石(shi)(shi)、石(shi)(shi)筍、石(shi)(shi)柱、多巖縫隙成(cheng)(cheng)群涌現(xian)。穿越五顏六色(se)的溶洞(dong)(dong)區(qu)域,欣賞拒馬(ma)河(he)(he)兩岸風光,峽(xia)谷(gu)兩面遍布(bu)著不少(shao)奇石(shi)(shi)異景,有“石(shi)(shi)猴戲水”、“石(shi)(shi)門頓開”、“懸崖(ya)棧道”、“天橋拱立”、“沙(sha)蟒攔(lan)路”等景點。“石(shi)(shi)猴戲水”在拒馬(ma)河(he)(he)湍流之(zhi)中(zhong),巖石(shi)(shi)林(lin)立,裸露水面,遠觀其形(xing),好似(si)(si)猴子(zi)戲水因(yin)而得名(ming)。“石(shi)(shi)門頓開”是(shi)(shi)一(yi)處(chu)(chu)塌落斷崖(ya),形(xing)似(si)(si)大門,非常壯觀。“沙(sha)蟒攔(lan)路”是(shi)(shi)一(yi)處(chu)(chu)單體突起的小(xiao)沙(sha)丘,長500米,高30米,兩側傾斜角34度,是(shi)(shi)深(shen)山峽(xia)谷(gu)中(zhong)的“小(xiao)戈壁”。