Doggie CrawlThe Doggie Crawl is a classic crawl tunnel that features many peek a boo holes for increased interior brightness and visibility. The large diameter tunnel allows entry by most dogs and is made of heavy duty rotomolded plastic. It can be surface mounted with ground spikes (included) or mounted inground. Each Bark Park component is developed for the enjoyment of dogs of all abilities and confidence levels. The agility based play components provide the