This afternoon, Bastrop county fire crews battled a large grass fire just outside of Red Rock. It happened in the 400 block of High Grove Road. The fire burned between 30 and 50 acres. The fire was near structures, but crews were able to protect them. They had the blaze under control in about 45 minutes... and by 5-30... firefighters were well into the mop-up stage and putting out hot spots. The cause is under investigation.