A young boy who suffered a medical condition 135 metres above sea level has been saved in a joint rescue operation between paramedics and SES volunteers.
A spokeswoman for Ambulance Victoria said paramedics were called to the Seal Caves Lookout in Cape Bridge Water about 2.40pm on Monday.
She said a high school aged boy was experiencing shortness of breath.
Lisa Sealy, from Portland SES, said the unit assisted Portland paramedics to carry the young boy to safety.
She said due to the difficult and narrow terrain, the unit was unable to travel the entire way with an eight wheeled Argo.
The rescue crew walked the remainder of the way with the unit's new litter mule - a single-wheel stretcher carrier that reduces manual handling.
"The mule comes apart so we can use it to get to tight places," she said.
"We did a rescue out here a few years ago and we had to hike in and lift this lady out. Without the mule there was a lot of manual work. The ambos were with us and we were all carrying our equipment, which is quite heavy at times.
"The Seal Walk is 135 metres above sea level so it's quite a difficult hike out there, it would have been pretty difficult to conduct the operation without the mule."
The young boy was transported to Portland Hospital in a stable condition.