While I was working with a student, Brett, Jay, and Steve laid line to the vents in the middle of the lake that were discovered a few months ago. They continued west and then found the west line, so there is now a line from the east line to the west line via the vents to the south as well as fia tha bottom of the old north line. Tomorrow we are going to see what we can accomplish working with the vents at the bottom of the east line, which still are the most promising in terms of size. We have now mapped out about 9 vents all over the lake. There is clearly a major water source of prodigious size below that lake.