Robot for exploration of small cave

I am looking for a crawling robot that can enter a small cave. It should carry a camera and lights. It should be able to climb over obstacles. With all gear attached it should be no more than 20cm high, 30cm wide and 40cm long. It should be able to record and/or transmit pictures. It should be remotely controlled. It should be able to explore at least 10-15m beyond the entrance of the cave. Could you please suggest models that would fulfill these requirements?
thanks

Werner

Sorry for the late reply.
If the signal won’t be blocked, and there is no water, you might consider something wireless
Ex: robotshop.com/en/inspectorbo … =RB-Inp-09
If you can give an idea of what’s in the cave (i.e. the operating environment), perhaps we can suggest alternative products.