737 Leg 7 Everest - Day 164

Our Sherpa Sirdar has been awesome. All in good spirits and attempting summit tonight. Leaving at 9pm. It was a windy night but toasty in my rab exped bag. Camp 4 might as well be the moon, broken tents, wind-strewn debris, abandoned camps and you cant do much around camp without using o2. We have been in our tents all day trying to eat and hydrate. Much of day spent ice melting! Weather has settled, we had snow this afternoon but winds dropped and now its clear. We have eaten well and have good comms to guys at base camp. Andy Chapman is on standby at camp 2 as well.