Summer Conclusion of Lake Exploration with Deep Rover: The blue pools (Llao's Bathtubs) are 10 times more saline than the surrounding Lake water. Blue pools within the blue lake. The temperature variation ranges from 38 degrees to 68 degrees inside the bacteria of mats, which are 3 - 4 inches deep and of unknown origin.

The Hydro thermal inflow is estimated at 200 -- 300 liters per second. Heat input, measured at 15 - 200 megawatts, is spread out immediately over a large area. Thermoclines create a lake water turnover every 1 - 4 years.

30 foot chimney-like spiers found extending upward from the bottom of the Lake near the sides. Most likely fossilized remains of extinct hot springs. On the Crater wall is a 300 foot wide band of moss beginning 100 feet below the surface, completely circling the caldera. Some mosses discovered are found only in Crater Lake.

Only 2% of the calderas floor and walls were visually explored. Midge fly worms (larva) were founded crawling in the light gray pumice sediment on the Lake floor, leaving behind a crawl trail. During the summer the larva change to the pupa stage, float 2,000 feet up to surface, where they become midge flies. Living only two or three days, the midges lay eggs on the Lake's surface and die. The eggs sink to the bottom of the Lake, where they hatch and begin the cycle over again.

Final Conclusions of Deep Rover's lake survey: As a result of the past three years, we concluded that there are inputs of hydrothermal fluids in the bottom of Crater Lake. The dissolved materials associated with these thermally and chemically enriched fluids, coupled with the overall hydrologic balances, control the observed chemical composite of the lake. Because hydrothermal input dominates the material fluxes of the most chemical into Crater Lake, the hydrothermal processe is highly significant. Furthermore, the geothermal inputs have a direct effect on the density structure of the deep lake and consequently the rate of heat, salt and nutrients redistributed.