Rattray's The Cave
Rattray's The Cave tobacco pipes collection is their version of a system. Underneath the bore there is a significantly sized chamber. This "cave" actually catches the moisture from the burning tobacco and from the stem and it holds it away from the air flow. The result is a massively cool and flavorful smoke. To clean out this pipe, simply take it apart (when it's cool of course), and daba pipe cleaner in the reservoir. This engineering spectacle from Rattray's has now been made available to you!