The room was large and it was quiet.Field fire to west of the motel, so power was shut off for several. hours.It was a HOT day..so no AC due to fire. We went outside after sunset..so diminishing light..walked back to motel on East side of it. There were two shorter concrete pillars with a low cable strung between them to keep cars out. This cable was not marked with anything..usually on things like this there may be a reflector as a "heads Up". It was like a "trip cable" that caught my partner midshin..neither of us saw it due to it not being marked at all, plus low light. My partner fell forcefully flat on his front side. Lights were still out in the motel. We went back to the room, my partner had a first aid kit and we had flash lights, he was bleeding profusely on both legs and knees. We got him cleaned up and used bandaids from his first aid kit. An aside is that no breakfasts served, just weak coffee..no coffee makers, but there was fridge and microwave.