Rock Climbing or Deep Water Soloing in Cat Ba: Which One Is Right for You
One has ropes, a partner and a system. The other has climbing shoes and the sea. They look alike in photographs and they are nothing alike in practice. Here is how to pick.
Cat Ba is one of the few places in the world where you can do both of these in the same week, and most people who come here for one end up curious about the other. They look similar in photographs and they are not similar at all. One is a technical sport with ropes, a partner and a system. The other is soloing a short overhang above deep water with no rope at all, and falling off on purpose.
This page is about choosing. Not which is better, because that question has no answer, but which one fits the person you actually are, the shape you are currently in, and the week you have.
The short version
| Rock climbing | Deep water soloing | |
|---|---|---|
| Where | Butterfly Valley and inland crags | Limestone walls rising straight out of Lan Ha Bay |
| Gear | Harness, rope, shoes, helmet, belayer | Shoes and a chalk bag, that is it |
| How you get down | Lowered on the rope | You fall in the sea |
| Experience needed | None, you are top roped | None, but you must be a confident swimmer |
| Height above the ground or water | 15 to 30 metres, on a rope | Usually 3 to 8 metres, no rope |
| Physically hardest part | Sustained forearm and grip | Climbing back onto the boat, repeatedly |
| Scariest part | Trusting the rope at the start | The moment you decide to let go |
| Season | Roughly October to April is best | Roughly April to October, water needs to be warm |
| Typical day length | Full day | Half to full day, boat based |
What rock climbing on Cat Ba is really like
The main venue is Butterfly Valley, an inland bowl of limestone about twenty minutes from town, with routes bolted across a wide range of grades. There are also crags on Ben Beo and further out in the bay reached by boat.
A beginner day looks like this. You are fitted with a harness and shoes, you learn how to tie in and how the belay works, and then you climb top roped, meaning the rope is already anchored above you. If you come off, you drop a few centimetres and hang there. You will climb three to six routes over a day and by the end your forearms will be finished.
What surprises people is that fear is not really the problem. Once you are on the rope and you have fallen once by accident, your brain settles quickly. The problem is grip strength, which runs out faster than anyone expects.
Limestone here is sharp, positive and very featured, which makes it forgiving for beginners. It also eats skin. By day two of climbing your fingertips will tell you about it.
What deep water soloing is really like
You take a boat out into Lan Ha Bay, tie up beneath a wall that rises straight out of the sea, and you climb it from the water with nothing on you but climbing shoes. When you can no longer hold on, you fall into the sea, swim back to the boat, and go again.
The heights are lower than people imagine. Most climbing happens between three and eight metres above the water, and the guide picks walls where the water is deep and clear of rock. Falling is the normal way a route ends, not a failure.
The physical demand is different from roped climbing. Individual climbs are short, but you repeat them all afternoon with a swim and a ladder in between, and the swimming is what empties the tank. Anyone who is not comfortable in open water will not enjoy this, and no amount of enthusiasm compensates for that.
The mental side is the opposite of roped climbing. There is no rope to trust, so the fear does not go away when you start, it goes away when you have fallen from four metres once and discovered that the sea is soft.
One thing worth being blunt about: deep water soloing looks casual and is not. You are climbing unroped above water, in a place where the nearest hospital is a boat ride away. Go with a guide who knows which walls are safe at which tide, and do not go and try it independently because you saw it on a video.
Choosing by who you are
Never climbed anything, nervous about heights. Rock climbing. The rope is doing the work and the fear resolves quickly. You will finish the day having climbed higher than you thought you could.
Never climbed, but you like jumping off things. Deep water soloing. You will spend the day laughing, and the climbing will improve without you thinking about it.
Not a strong swimmer. Rock climbing, without hesitation. This is not a preference, it is the decision.
Visiting between November and March. Rock climbing. The sea is cold enough that repeated swimming stops being fun, and the inland crags are at their best in the cooler months.
Visiting between May and September. Deep water soloing. Warm water, and the inland valley is brutally hot by mid morning.
You have climbed before and want a real day out. Both, on different days. They use different muscles and the contrast is the point.
You have one day and want the best story. Deep water soloing. It is the more unusual of the two and there are only a handful of places on earth doing it properly.
Still not sure?
Tell us when you are here, how you feel about open water, and whether you have climbed before. We run both and we will tell you honestly which one you will enjoy more, including when the answer is neither.
Practical things that apply to both
Bring more water than you think. Both days are hotter than they look in photographs, and dehydration is the most common reason someone stops early.
Cut your fingernails. This sounds trivial and it is the single most common small regret.
Do not wear sunscreen on your hands. It makes holds greasy and it ruins the day for whoever climbs after you.
Insurance matters. Many standard travel policies exclude unroped climbing specifically. Read the adventure sports clause before you book.
Neither activity requires prior experience, but both require a reasonable level of general fitness. If a flight of stairs is a problem, say so when you book and we will plan the day differently rather than letting you find out on the wall.
Where each one happens
Butterfly Valley is inland, about twenty minutes by road from Cat Ba town, in a bowl surrounded by limestone. Shade comes and goes through the day, so the guide moves the group around the crag as the sun tracks.
Deep water soloing happens in Lan Ha Bay, forty five minutes to an hour out from Ben Beo by boat, depending on which walls are working with the tide that day. The boat is your base for the whole session, which means shade, water and somewhere to sit between climbs.
Related Reading
- Deep Water Soloing in Cat Ba: A Complete Beginner Guide
- Cat Ba Rock Climbing Day Tour
- Deep Water Soloing in Lan Ha Bay Tour
- 15 Best Things to Do on Cat Ba Island
- The Best Time to Visit Cat Ba Island
- Is Cat Ba Safe? An Honest Look at the Real Risks
Common questions
No. Both run beginner sessions and most people who do them have never climbed before. For deep water soloing you do need to be a confident swimmer in open water, and that part is not negotiable.
Usually between three and eight metres above the water. Guides pick walls where the water beneath is deep and clear. Falling in is the normal way a climb ends, not a mistake.
Roped rock climbing. You are top roped, meaning the rope is anchored above you, so coming off means dropping a few centimetres. Most people relax within the first hour.
Roughly October to April suits inland rock climbing, when the valley is cooler. Roughly April to October suits deep water soloing, when the sea is warm enough for repeated swimming.
Yes, and if you have climbed before it is the best use of a few days here. They use different muscles and the contrast between them is the interesting part. Do not do them on consecutive days unless your forearms are used to it.
Often not. Many standard policies exclude unroped climbing by name. Check the adventure sports section of your policy before you book rather than after.
More water than you think, sun protection that is not on your hands, and short fingernails. Everything technical is provided. For deep water soloing, bring clothes you are happy to swim in.