[tag=IN] [lemma=□] □
[tag=IN] [lemma=the] □
[tag=IN] [lemma=tunnel] □
Sometimes the students overlook such matters or fall into the tunnel vision of being too immersed within the details . They will eventually cease to grow either when the cavity is completely filled with loose debris , or earlier if the tunnel roof achieves a state of equilibrium . And as my engine would go shooting into the tunnel , the old couple would turn and go back inside . Prospect tunnels in the gravels of the Tehama Formation exposed above Red Pond in the Spring Creek valley contain fine - grained pyrite that is now being oxidized , because the tunnels provide drainage and have thus lowered the water table . Fumigants such as ethyl acetate , acetone or other commercial preparations may be squirted into the tunnel with an oiler , then cover the exit hole plugged with putty or tree paint . We continued further into the tunnel , and a foreman ordered my brother and me to work with three prisoners already at work there . " With that , Pyre left the room and took a back entrance through the tunnels to Farrah 's office . It did not take them long to roll back the altar , descend into the tunnel , and reach the underground city . The system above circulates cold water through the tunnels . Again , I realized that if my motion was not guided , I would only continue looping through the tunnels - never reaching a light or going through a door . Some of these vendors I care if the tunnel is up and others I do not . But the fundamental problem of determining how many tunnels to use and how to multiplex traffic onto the tunnels is a function best performed by a VPN manager [ PCE-VPN-APPL ] .